Sadly, WebGL filters can be quite taxing on lower-end GPUs. What kind of rig are you running?
windows 10. I'll see if something else is at fault. and it's ok about the refund, I caught it on sale lol... I just wanna see if I can get the lag down. I dunno if it's because I've updated a lot of internal files or what. annnd I figured out why composite isn't working I think... files that I don't need anymore are claimed to be missing.