Ps2 is definitely harder than n64 heck its harder than Gamecube! But i have had absolutely no problem getting full speed with all n64 ive tried even with all the RARE games on stock cpu after changing a few settings. I wouldn’t say n64 is barely running, that is a massive understatement, but to get PS2 running well would amaze me. Comparing ps2 to n64 emulation is a night and day comparison. I have serious doubts it will ever happen with play! emulator. I would be amazed if play runs games close to how dolphin emulates most Wii games, and the Wii is one generation in front.