I don’t know what is going on. I am sincerely hoping they try and fix this. Paranomic rendering can’t be using 20gb of vram in order to render. That imho is too much.
From my observations, 5.0 uses 10-12gb while 5.1.1 uses 20-23gb with Allocate History per pane enabled. Doesn’t matter if the scene is empty. I am not sure why this huge amount of ram is required. There is a huge increase from 5.0 to 5.1.1, why does 5.1.1 require an extra 10gb to render?