As a PC gamer my jumps were a bit different, going from 386/486 era straight to 2000 era 3D games with Voodoo 3, essentially straight from NES to PS2 level graphics. Of course I did experience the early jump to 3D and that was probably the biggest paradigm shift in graphics so I voted for that jump even if I never had a PS1 or N64.
Same goes for PS2 era, I missed that as I wasn't a console gamer and my PC was by then starting to get a bit long in the tooth. The next jump was essentially the jump to HD with PS360, but to me it kinda represented the end of a golden age as a lot of PC exclusive devs went to console, and multiplatform titles sucked on PC if they even existed. Graphically it was still a major leap though, going from old 4:3 to widescreen, but to me the most memorable moment in transition to HD era was probably getting my first 23" 1080p monitor, which was an awesome jump over a 17" 4:3 1280x1024 (iirc) monitor. Playing Crysis on that was probably the last truly big jump in graphics. Anything after that has been just iterative improvement really. I did move to 3x1080p Eyefinity at some point, which was also an awesome improvement in immersion, but but ended up being a bit of a technical hassle so I eventually moved on to a single 40" 4K panel. I tried 120 Hz as well, but tbh I'm fine with 60 FPS as I prefer controllers these days and don't play anything competitive so high refresh is just an extra really.
The next paradigm shift on the level of going from 2D to 3D is definitely VR, but there's still problems with it as it needs to be wireless and effortless, but the tech isn't quite there yet and mobile hw can't really push enough pixels. I do think though that the combination of Oculus Quest like fully mobile sets as well as next gen console VR will truly bring it to mainstream, with PCVR offering the upsell option. I'm not quite sold on Quest being quite enough for a standalone set yet, but I can see how the likes of Nintendo could do a fully mobile VR platform in the future.