taking forever to load footage

[Repeetpro]

I scrub though tons of content in thumbnail view. Usually it takes a little bit for it to go through the "Media Pending" and then I can scrub through pretty quick. After this last update, it is now taking FOREVER to scrub over 1 clip. I'm going to have to switch off of Beta to continue editing because it's killing my speed so much.

[Andy Edwards]

Is your media all types of codecs or just one? Does any of your media have embedded captions? Have you tried turning off the preference "Automatic waveform generation"?