I’m sure you could do N64 style graphics at 120Hz on an iGPU with modern hardware, hahaha. I wonder if that would be a good option for competitive shooters.

I don’t really mind low frame rates, but latency is often noticeable and annoying. I often wonder if high frame rates are papering over some latency problems in modern engines. Buffering frames or something like that.

Doom 2016 at 1080p with a 50% resolution scale (so, really, 540p) can hit 120 FPS on an AMD 8840U. That's what I've been doing on my GPD Win Mini, except that I usually cut the TDP down to 11-13W, where it's hitting more like 90-100 FPS. It looks and feels great!