I have a 4k clip on the time line with a duration of 8 secs. I just wanted the shot in reverse, so i right click the clip and select 'reverse'. It takes 30 mins or more to just reverse that clip ! Is this normal ? Why so ? I hit backward play and it plays smoothly on the system (JKL keys on keyboard) even backward. Yet why does it need such heavy resources just to consolidate that clip permanently into reverse ?