How bad can a bottleneck be?

Traciatim

Distinguished
It really depends. I have an old i3-530 that I use as a HTPC hooked up to the living room TV and it has an old decent video card in it. It runs most games pretty well, and tweaking settings usually gets things running pretty well. On another machine in the house we have an older Phenom II X4 965BE with a GTX 1060 and it runs surprisingly well in newer games (specifically Ark, I was pretty happy with the performance after that machines 7850 decided to die and needed to be replaced).

So it really depends on your expectations. Some games it's going to be great, and some you'll have to find the CPU bound settings and turn them down. You'll always be able to do things like run better anti-aliasing and textures though, since you have plenty of VRAM and the GPU will probably be waiting around on the CPU anyway, so you may as well have it cleaning up to image as much as it can.