RDG will use the RHITransientResourceAllocator to allocate all transient resources. 0: disables the transient allocator; 1: enables the transient allocator (default); 2: enables the transient allocator for resources with FastVRAM flag only
Usage
r.RDG.TransientAllocator [value]
Set via the console (~) or in DefaultEngine.ini / DefaultGame.ini.