Deprecated 5.3. If set to 1 the allocators used for GPU-scene instances and similar will use a grow-only allocation policy to mimic the behavior in 5.2 and earlier.
Disabled by default, which means that the buffers can shrink as well as grow.
Usage
r.GPUScene.UseGrowOnlyAllocationPolicy [value]
Set via the console (~) or in DefaultEngine.ini / DefaultGame.ini.
