@Triplefox yeah, quake was tough at launch. and that was WITH john carmack's visionary 3D-programming wizardry augmented by michael abrash's assembly-language genius

TF2 is a more recent game that was playable for some people at launch but then performed worse and worse as F2P junk choked the engine

this all reminded me of steel talons for the atari lynx, an arcade conversion that ran at approx. 3 fps on the handheld

https://www.youtube.com/watch?v=Iej5HJLd7Eg

acceptable ranges for framerate were quite low until the 2000s!