So i've been using vegas for ages and with no issues, 3 days ago i had to reinstall vegas due to something i thought was a bug in vegas but in reality it was something else. when reinstalling i had to change a bunch of stuff to get it back as i had it, but all of a sudden vegas just crashed every 10-20 seconds all the time, i then forgot i on my early vegas had legacy AVC encoding and HEVC on, witch i remembered fixed the crashes. so i enabled that again and it did infact fix the crahses. But now when i edit everything is fine, but as soon as i work with multiple of the same layers, fx the way i add webcam over gameplay is copy the original file over the gameplay and fit it to be the webcam (recorded in 3840x1080 so two 1080 displays one webcam one gameplay) so whenever i do this witch i have to do, my preview becomes 1-3 frames a second where as right before adding another layer its 30fps all the time.