Longtime lurker on these forums. I have only used the bootleg compilation mod and the Bloodshots Tifa mod.
Everytime I encounter Yuffie in one of her spawning locations her model vibrates with her hand on her throwing star thing and the game ceases to function properly. The music still plays and there are no graphical errors, the battle sequence just ceases to continue as it should.
Her model I chose in bootleg called the Yuffie Grimmy AC model I believe.
Another problem I frequently get is getting stuck in places I assume I shouldn't be in. Getting stuck in random corners and behind normally closed off areas. Most notably getting stuck on the ladder middle during the second bombing mission and getting stuck behind the poled off area near the place you have to ride the dolphin. Also a large enough number of NPCs respond much to slowly to my talk command. Not enough NPCS to make the game suck, but enough to be annoying.
Computer specs:
Radeon HD 7970
Intel Core 2 Quad
4 Gigabytes of RAM (but DDR2)
Thanks in advance for any comments or help.