this could be for a number of reasons:
if this occurs as soon as you launch the game even before the playstation logo: it is most likely your using the wrong plugins. try different plugins trial and error if your unsure about them. dunno about you but the "petes" plugins are prob the best for me.
if it occurs after the playstation logo and as the game starts up then im afraid it might be something game related. (perhaps tekken 3 isn't fully supported?) or something else idk...
(maybe you could specify your setup a bit more clear?) good luck anyway