>>357789221
the base settings it comes with for VRC lowers the visual quality only by a small amount, the picture might become a bit blurry but you will only notice it if you focus on it being blurry
during the time that i used it i noticed a stable 45 fps in most (unoptimized) worlds/with unoptimized avatars shown
you can also play around with the settings and see if you can figure out a good middle ground in terms of quality and performance, use the guide on the github page and see if it helps