I've been using this editor (movie pro premium 2013) for a year with no real problems however when I went to edit a video today the preview screen was lagging (a lot) making it near on impossible to edit my video. I tried changing the playback settings around a bit but this made no difference. Does anyone have any advice?
(It has lagged in the past when I've added a lot of effects/ starting colour correcting but usually is fine before that.)
I'm usuing windows 8 on a HP Pavillion PC, with 1.5 processor, 8gb ram and a NVIDIA grpahics card installed.