No difference on my end. Getting massive stutters to 1-5 fps every few seconds regardless.
How much VRAM and what texture settings are you using?
Do you have an SSD?
My guess is the texture streaming is optimised for the consoles (unified memory) so it will hit people with low VRAM the hardest. For people who have enough VRAM to not need to swap back to main memory I would guess setting the lock to 30 would fix it mostly. Most likely that some of the game logic is written with 30FPS in mind, and uncapping it leads to funky behaviour.