diff --git a/app/CMakeLists.txt b/app/CMakeLists.txt
index 3813ee347..dab602ae7 100644
--- a/app/CMakeLists.txt
+++ b/app/CMakeLists.txt
@@ -76,6 +76,7 @@ target_link_libraries(${OLIVE_TARGET}
   FFMPEG::swscale
   FFMPEG::swresample
   OpenColorIO
+  OpenImageIO
 )
 
 set(OLIVE_EFFECTS
diff --git a/app/common/define.h b/app/common/define.h
new file mode 100644
index 000000000..37ff4cc5d
--- /dev/null
+++ b/app/common/define.h
@@ -0,0 +1,26 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2019 Olive Team
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+***/
+
+#ifndef OLIVECOMMONDEFINE_H
+#define OLIVECOMMONDEFINE_H
+
+const int kRGBAChannels = 4;
+
+#endif // OLIVECOMMONDEFINE_H
diff --git a/app/core.cpp b/app/core.cpp
index 9a12dd5c5..37ee31929 100644
--- a/app/core.cpp
+++ b/app/core.cpp
@@ -280,7 +280,8 @@ void Core::CreateNewSequence()
     rp->SetParameters(new_sequence->video_width(),
                       new_sequence->video_height(),
                       olive::PIX_FMT_RGBA16F, // FIXME: Make this configurable
-                      olive::RenderMode::kOffline);
+                      olive::RenderMode::kOffline,
+                      2);
 
     // Set the "cache name" only here to aid the cache ID's uniqueness
     rp->SetCacheName(new_sequence->name());
diff --git a/app/node/input/media/media.cpp b/app/node/input/media/media.cpp
index 9363e7d5c..f2d0981c0 100644
--- a/app/node/input/media/media.cpp
+++ b/app/node/input/media/media.cpp
@@ -223,9 +223,6 @@ QVariant MediaInput::Value(NodeOutput *output, const rational &time)
     renderer->buffer()->Attach(output_texture);
     renderer->buffer()->Bind();
 
-    glClearColor(1.0, 0.0, 0.0, 1.0);
-    glClear(GL_COLOR_BUFFER_BIT);
-
     // Draw with the internal texture
     internal_tex_.Bind();
 
diff --git a/app/node/processor/renderer/renderer.cpp b/app/node/processor/renderer/renderer.cpp
index 33eb536f6..e5b8f3cb4 100644
--- a/app/node/processor/renderer/renderer.cpp
+++ b/app/node/processor/renderer/renderer.cpp
@@ -20,6 +20,7 @@
 
 #include "renderer.h"
 
+#include <OpenImageIO/imageio.h>
 #include <QApplication>
 #include <QCryptographicHash>
 #include <QDateTime>
@@ -29,11 +30,13 @@
 #include <QtMath>
 
 #include "common/filefunctions.h"
+#include "render/pixelservice.h"
 
 RendererProcessor::RendererProcessor() :
   started_(false),
   width_(0),
   height_(0),
+  divider_(1),
   caching_(false)
 {
   texture_input_ = new NodeInput("tex_in");
@@ -92,23 +95,21 @@ QVariant RendererProcessor::Value(NodeOutput* output, const rational& time)
       return 0;
     }
 
-    // FIXME: Test code only
     QString fn = CachePathName(time);
     if (QFileInfo::exists(fn)) {
-      QFile cache_img(fn);
+      auto in = OIIO::ImageInput::open(fn.toStdString());
 
-      if (cache_img.open(QFile::ReadOnly)) {
+      if (in) {
+        in->read_image(PixelService::GetPixelFormatInfo(format_).oiio_desc, cache_frame_load_buffer_.data());
 
-        QByteArray bytes = cache_img.readAll();
+        in->close();
 
-        master_texture_->Upload(bytes.constData());
-
-        cache_img.close();
+        master_texture_->Upload(cache_frame_load_buffer_.data());
 
         return QVariant::fromValue(master_texture_);
       }
+
     }
-    // End test code
   }
 
   return 0;
@@ -152,7 +153,8 @@ void RendererProcessor::SetTimebase(const rational &timebase)
 void RendererProcessor::SetParameters(const int &width,
                                       const int &height,
                                       const olive::PixelFormat &format,
-                                      const olive::RenderMode &mode)
+                                      const olive::RenderMode &mode,
+                                      const int& divider)
 {
   // Since we're changing parameters, all the existing threads are invalid and must be removed. They will start again
   // next time this Node has to process anything.
@@ -164,6 +166,27 @@ void RendererProcessor::SetParameters(const int &width,
   format_ = format;
   mode_ = mode;
 
+  // divider's default value is 0, so we can assume if it's 0 a divider wasn't specified
+  if (divider > 0) {
+    divider_ = divider;
+  }
+
+  CalculateEffectiveDimensions();
+
+  // Regenerate the cache ID
+  GenerateCacheIDInternal();
+}
+
+void RendererProcessor::SetDivider(const int &divider)
+{
+  Q_ASSERT(divider_ > 0);
+
+  Stop();
+
+  divider_ = divider;
+
+  CalculateEffectiveDimensions();
+
   // Regenerate the cache ID
   GenerateCacheIDInternal();
 }
@@ -176,11 +199,13 @@ void RendererProcessor::Start()
 
   QOpenGLContext* ctx = QOpenGLContext::currentContext();
 
-  threads_.resize(QThread::idealThreadCount());
+  int background_thread_count = qMax(1, QThread::idealThreadCount() - 1);
+
+  threads_.resize(background_thread_count);
 
   for (int i=0;i<threads_.size();i++) {
-    threads_[i] = std::make_shared<RendererProcessThread>(ctx, width_, height_, format_, mode_);
-    threads_[i]->StartThread(QThread::HighPriority);
+    threads_[i] = std::make_shared<RendererProcessThread>(ctx, effective_width_, effective_height_, format_, mode_);
+    threads_[i]->StartThread(QThread::LowPriority);
 
     // Ensure this connection is "Queued" so that it always runs in this object's threaded rather than any of the
     // other threads
@@ -188,13 +213,21 @@ void RendererProcessor::Start()
     connect(threads_[i].get(), SIGNAL(RequestSibling(NodeDependency)), this, SLOT(ThreadRequestSibling(NodeDependency)), Qt::QueuedConnection);
   }
 
-  // Create download thread
-  download_thread_ = std::make_shared<RendererDownloadThread>(ctx, width_, height_, format_, mode_);
-  download_thread_->StartThread(QThread::HighPriority);
+  download_threads_.resize(background_thread_count);
+
+  for (int i=0;i<download_threads_.size();i++) {
+    // Create download thread
+    download_threads_[i] = std::make_shared<RendererDownloadThread>(ctx, effective_width_, effective_height_, format_, mode_);
+    download_threads_[i]->StartThread(QThread::LowPriority);
+  }
+
+  last_download_thread_ = 0;
 
   // Create master texture (the one sent to the viewer)
   master_texture_ = std::make_shared<RenderTexture>();
-  master_texture_->Create(ctx, width_, height_, format_);
+  master_texture_->Create(ctx, effective_width_, effective_height_, format_);
+
+  cache_frame_load_buffer_.resize(PixelService::GetBufferSize(format_, effective_width_, effective_height_));
 
   started_ = true;
 }
@@ -212,15 +245,19 @@ void RendererProcessor::Stop()
   }
   threads_.clear();
 
-  download_thread_->Cancel();
-  download_thread_ = nullptr;
+  foreach (RendererDownloadThreadPtr download_thread_, download_threads_) {
+    download_thread_->Cancel();
+  }
+  download_threads_.clear();
 
   master_texture_ = nullptr;
+
+  cache_frame_load_buffer_.clear();
 }
 
 void RendererProcessor::GenerateCacheIDInternal()
 {
-  if (cache_name_.isEmpty() || width_ == 0 || height_ == 0) {
+  if (cache_name_.isEmpty() || effective_width_ == 0 || effective_height_ == 0) {
     return;
   }
 
@@ -228,8 +265,8 @@ void RendererProcessor::GenerateCacheIDInternal()
   QCryptographicHash hash(QCryptographicHash::Sha1);
   hash.addData(cache_name_.toUtf8());
   hash.addData(QString::number(cache_time_).toUtf8());
-  hash.addData(QString::number(width_).toUtf8());
-  hash.addData(QString::number(height_).toUtf8());
+  hash.addData(QString::number(effective_width_).toUtf8());
+  hash.addData(QString::number(effective_height_).toUtf8());
   hash.addData(QString::number(format_).toUtf8());
 
   QByteArray bytes = hash.result();
@@ -261,11 +298,17 @@ QString RendererProcessor::CachePathName(const rational &time)
   QDir this_cache_dir = QDir(GetMediaCacheLocation()).filePath(cache_id_);
   this_cache_dir.mkpath(".");
 
-  QString filename = QString("%1.%2.jpg").arg(QString::number(time.numerator()), QString::number(time.denominator()));
+  QString filename = QString("%1.%2.exr").arg(QString::number(time.numerator()), QString::number(time.denominator()));
 
   return this_cache_dir.filePath(filename);
 }
 
+void RendererProcessor::CalculateEffectiveDimensions()
+{
+  effective_width_ = width_ / divider_;
+  effective_height_ = height_ / divider_;
+}
+
 void RendererProcessor::ThreadCallback()
 {
   if (sender() == master_thread_) {
@@ -280,7 +323,9 @@ void RendererProcessor::ThreadCallback()
     if (texture == nullptr && QFileInfo::exists(fn)) {
       QFile(fn).remove();
     } else {
-      download_thread_->Queue(texture, fn);
+      // Choose download thread with the smallest queue
+      download_threads_[last_download_thread_%download_threads_.size()]->Queue(texture, fn);
+      last_download_thread_++;
     }
 
     CacheNext();
diff --git a/app/node/processor/renderer/renderer.h b/app/node/processor/renderer/renderer.h
index 1c0742d2c..8283b2043 100644
--- a/app/node/processor/renderer/renderer.h
+++ b/app/node/processor/renderer/renderer.h
@@ -78,7 +78,10 @@ public:
   void SetParameters(const int& width,
                      const int& height,
                      const olive::PixelFormat& format,
-                     const olive::RenderMode& mode);
+                     const olive::RenderMode& mode,
+                     const int &divider = 0);
+
+  void SetDivider(const int& divider);
 
   /**
    * @brief Return current instance of a RenderThread (or nullptr if there is none)
@@ -140,9 +143,14 @@ private:
   NodeOutput* texture_output_;
 
   int width_;
-
   int height_;
 
+  void CalculateEffectiveDimensions();
+
+  int divider_;
+  int effective_width_;
+  int effective_height_;
+
   olive::PixelFormat format_;
 
   olive::RenderMode mode_;
@@ -158,8 +166,10 @@ private:
   bool caching_;
   RendererProcessThread* master_thread_;
   rational cache_frame_;
+  QVector<uchar*> cache_frame_load_buffer_;
 
-  RendererDownloadThreadPtr download_thread_;
+  QVector<RendererDownloadThreadPtr> download_threads_;
+  int last_download_thread_;
 
   RenderTexturePtr master_texture_;
 
diff --git a/app/node/processor/renderer/rendererdownloadthread.cpp b/app/node/processor/renderer/rendererdownloadthread.cpp
index 4c499b883..c0250f184 100644
--- a/app/node/processor/renderer/rendererdownloadthread.cpp
+++ b/app/node/processor/renderer/rendererdownloadthread.cpp
@@ -1,7 +1,9 @@
 #include "rendererdownloadthread.h"
 
 #include <QFile>
+#include <OpenImageIO/imageio.h>
 
+#include "common/define.h"
 #include "render/pixelservice.h"
 
 RendererDownloadThread::RendererDownloadThread(QOpenGLContext *share_ctx,
@@ -81,21 +83,31 @@ void RendererDownloadThread::ProcessLoop()
                     format_info.pixel_type,
                     data_buffer);
 
-    render_instance()->context()->extraFunctions()->glFramebufferTexture2D(
-          GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, 0, 0
-          );
+    xf->glFramebufferTexture2D(GL_READ_FRAMEBUFFER,
+                               GL_COLOR_ATTACHMENT0,
+                               GL_TEXTURE_2D,
+                               0,
+                               0);
 
     f->glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
 
-    QFile data_dump(working_filename);
+    std::string working_fn_std = working_filename.toStdString();
 
-    if (data_dump.open(QFile::WriteOnly)) {
-      data_dump.write(reinterpret_cast<char*>(data_buffer), buffer_size);
+    std::unique_ptr<OIIO::ImageOutput> out = OIIO::ImageOutput::create(working_fn_std);
 
-      data_dump.close();
+    if (out) {
+      OIIO::ImageSpec spec(working_texture->width(), working_texture->height(), kRGBAChannels, format_info.oiio_desc);
+
+      spec.attribute("compression", "dwaa:200");
+
+      out->open(working_fn_std, spec);
+
+      out->write_image(format_info.oiio_desc, data_buffer);
+
+      out->close();
     }
 
-    qDebug() << "Saved" << working_filename;
+    qDebug() << this << "saved" << working_filename;
 
   }
 
diff --git a/app/render/colorservice.cpp b/app/render/colorservice.cpp
index 533d60bd8..7c57fafd7 100644
--- a/app/render/colorservice.cpp
+++ b/app/render/colorservice.cpp
@@ -1,6 +1,6 @@
 #include "colorservice.h"
 
-const int kRGBAChannels = 4;
+#include "common/define.h"
 
 ColorService::ColorService(const char* source_space, const char* dest_space)
 {
diff --git a/app/render/pixelservice.cpp b/app/render/pixelservice.cpp
index fc9815f83..babaf293f 100644
--- a/app/render/pixelservice.cpp
+++ b/app/render/pixelservice.cpp
@@ -24,7 +24,7 @@
 #include <QDebug>
 #include <QFloat16>
 
-const int kRGBAChannels = 4;
+#include "common/define.h"
 
 PixelService::PixelService()
 {
@@ -39,21 +39,25 @@ PixelFormatInfo PixelService::GetPixelFormatInfo(const olive::PixelFormat &forma
     info.name = tr("8-bit");
     info.internal_format = GL_RGBA8;
     info.pixel_type = GL_UNSIGNED_BYTE;
+    info.oiio_desc = OIIO::TypeDesc::UINT8;
     break;
   case olive::PIX_FMT_RGBA16:
     info.name = tr("16-bit Integer");
     info.internal_format = GL_RGBA16;
     info.pixel_type = GL_UNSIGNED_SHORT;
+    info.oiio_desc = OIIO::TypeDesc::UINT16;
     break;
   case olive::PIX_FMT_RGBA16F:
     info.name = tr("Half-Float (16-bit)");
     info.internal_format = GL_RGBA16F;
     info.pixel_type = GL_HALF_FLOAT;
+    info.oiio_desc = OIIO::TypeDesc::HALF;
     break;
   case olive::PIX_FMT_RGBA32F:
     info.name = tr("Full-Float (32-bit)");
     info.internal_format = GL_RGBA32F;
     info.pixel_type = GL_FLOAT;
+    info.oiio_desc = OIIO::TypeDesc::FLOAT;
     break;
   default:
     qFatal("Invalid pixel format requested");
diff --git a/app/render/pixelservice.h b/app/render/pixelservice.h
index cc41f1f1f..6cb0f5102 100644
--- a/app/render/pixelservice.h
+++ b/app/render/pixelservice.h
@@ -23,6 +23,7 @@
 
 #include <QString>
 #include <QOpenGLExtraFunctions>
+#include <OpenImageIO/imageio.h>
 
 #include "decoder/frame.h"
 #include "pixelformat.h"
@@ -43,6 +44,7 @@ struct PixelFormatInfo {
   GLenum pixel_format;
   GLenum pixel_type;
   int bytes_per_pixel;
+  OIIO::TypeDesc oiio_desc;
 };
 
 class PixelService : public QObject {
diff --git a/app/render/renderinstance.h b/app/render/renderinstance.h
index e61372752..0d6c47a6d 100644
--- a/app/render/renderinstance.h
+++ b/app/render/renderinstance.h
@@ -79,6 +79,8 @@ private:
   olive::PixelFormat format_;
 
   olive::RenderMode mode_;
+
+  int divider_;
 };
 
 #endif // GLINSTANCE_H