Post-Processing Effects ERROR

[BESTPLAYER098]

When I Choose ASCIIART it crashes and gives me this error

[mbc07]

Well, ASCII Art is a veeeery demanding shader, and your GPU isn't too powerful, that's may be the cause, but I'm not sure...

[BESTPLAYER098]

I tried it on other more powerful pc s too but the same error occours

[ExtremeDude2]

Define "more powerful"

[BESTPLAYER098]

It was a gtx 680 not the best but how powerful it is shouldnt matter if it isnt enough powerful for example some other effects it slows down 80% speed but it works. Only asciiart crashes.
Other graphics cards iv tested gtx 550 and gt 630 and on a very old 8400 fx

[mbc07]

Maybe buggy drivers, then? But don't expect "playable" speeds when using that shader, even in high end GPUs...