diff --git a/platform/platform_qt.cpp b/platform/platform_qt.cpp
index 8f609eb257..59e485b7dc 100644
--- a/platform/platform_qt.cpp
+++ b/platform/platform_qt.cpp
@@ -86,7 +86,7 @@ int Platform::ScaleEtalonSize() const
 
 int Platform::VideoMemoryLimit() const
 {
-  return 100 * 1024 * 1024;
+  return 20 * 1024 * 1024;
 }
 
 bool Platform::IsFeatureSupported(string const & feature) const