Red Frames?

I just started in premiere pro, I mostly use After effects but I was wanting to speed up a recording I did to show my mother what goes into editing in after effects. so I recorded my screen, did some editing and I was done, but the video came out to be over an hour long and I'm wanting to speed the video up so that its only 1 minute, so I did and I started noticing red frames popping up even before I started editing the clip, I would just scrub through the time line and red frames would pop up. I thought it was just a rendering problem so I went ahead and sped up the clip and exported it. I went to look at the clip and Its just blinking red along with the original clip, Is anyone experiencing the same thing, or is there a fix for it? ever since then I cant export something without there being red frames in it. I've already uninstalled the app, but the problem persists. can anyone help?

Also everything I try and export now from both after effects and Premiere Pro takes almost 3 hours for a 1 minute clip. I've already uninstalled adobe and re-installed it but that hasn't worked. I just bought the all apps plan because I heard people raving about how well the software works. These are terrible first impressions and if the problem persists and I cant export videos without red frames in them, I will consider canceling my subscription because I cant get any usable work done.