I loaded up the original Serious Sam The First Encounter about a year ago, and that game never ceases to amaze me with how much they were able to squeeze out of relatively low-powered 2002 computers. I had it as a kid, and I had never seen so many enemies on the screen at once. Even now, the game mostly holds up pretty well and it still kind of impresses me.
I know many people love Doom Eternal and other shooters with similar issues. Maybe I'm just sensitive to these kinds of frustrations.