I've switched over from QTminer to Claymore's to test it out. I saw the instruction to set 16GB of virtual memory but figured that if I had 32GB of RAM it would be fine without it. (Not running other programs in the background.) I've been running it for 7 hours thus far and I haven't had any issues besides stutter when moving the mouse; hashrates had a minor bump from 57MH/s to 60MH/s (dual Fury X setup, Crossfire still enabled). I am getting a small amount of stale shares, a little more than usual, but I don't know if that's from the client or just my luck at the moment.
Anyways, do I still need to have 16GB of VRAM? I'd like to ask this from the crowd with rigs that have more memory. It's been kinda hard searching for a straightforward answer.