It can be caused by the image stretching due to higher internal resolution. Ticking "native" in the graphics plugins solves this problem. To my experience it only happens on the character select and intro screens.
It's a problem with some games, try internal resolutions like 1200x1200, 1020x1020, 1070x1070 or ticking native as jadariin suggested.
Thanks! Using native solved the problem.
Well it didn't solve mine I have same problem the evenly placed lines one and native only makes the resolutions look really bad I play it at 1024x1024 and I was really very surprised at even that resolution FPS was like 28-35 in DEVIL WITHIN mode hehe looks like my old pile of dirt IS good for something after all but anyways the lines just won't disappear
Dont use speedhack too much, especially vucycle stealing mixed with EE Cyclerate x3 because can give you bogus FPS.
if you want to get back the speed you will loose from using less speedhacks put both clamp modes to NONE and try using superVU (both maybe create problems so just try them)
well i avoided using EE cyclerate x3 and just sticked to the vu cycle stealing and it turned out okay, the fps displays more accurately now. i can't actually set the clamp mode to none because it causes the slow stages to only display a black screen, better only having 50-60fps than black screen i guess. i think the superVU option helped out as well, thanks guys for helping me out. i'll just try to avoid the slow stages as much as possible if i can, i'm actually happy that the new beta r3113 is doing quite well with tekken 5, i only had around 45fps with previous versions but now i'm able to go way beyond 60fps.