Because emulators don't work that way. Rendering frames is only one small part of what's being done. Here's a real life test i did a few days ago of 25 vs 30 fps: https://docs.google.com/spreadsheets/d/1gIEcLub4bxDR_ZgqPVuKiUbFLoBsnqOmoM4Kfadpw9g
If you hacked a game to run at half the fps, dolphin would then run at ~45-48% less fps. Sure, you'd get a tiny benefit, but not even close enough to be worth dropping to a shit frame rate, let alone the work to create such a hack in the first place.
If you hacked a game to run at half the fps, dolphin would then run at ~45-48% less fps. Sure, you'd get a tiny benefit, but not even close enough to be worth dropping to a shit frame rate, let alone the work to create such a hack in the first place.