Quote: those filterings don't interfere in the game's speed. I tested this affirmation myself with PCSX2.1.Lolwut. I just tried to run KH2 on PCSX2. 0aa — fullspeed(60fps), x16aa — 15-20fps. Feel the difference. Anti-aliasing is one of the most resource-intensive processes.
2.Jpcsp differs greatly from Pcsx2. Even if your video card more powerful than mine, it dont give you fullspeed in jpcsp, because jpcsp writen in java. Java is slow programming environment. For high fps you need hi-end cpu like Core i5/7.