Increased it to 10 GB and it helped me with reducing Lag & Stutter. Also, I got a 5->10 FPS bump.
So, YES!
--> I was more interested in reducing Lag & Stutter then getting a FPS Boost <--
--> CPU = AMD Ryzen 9 3950x
--> GPU RTX 2080Ti (with 8GB memory)
--> RAM = 32GB
--> Virtual Mem = 32GB
it...