New to editing and to Kden and to this forum.

Using 5120X2880 29.97fps profile settings for my Gopro's 5K footage, have proxy clips enabled, GPU toggled either way in playback configurations.

There's about thirty minutes of this 5k footage in the timeline now, making it crash way more often than when there was less. I can't do a thing at this point, and I tried everything I know to fix it. HELP!