Premiere Freezes ONLY when I try to move or extend / shorten clips

The application runs smoothly for everything else. The rendering is instantaneous. My computer has good specs and runs Windows 10 64 bit. I have CUDA enabled. Only when I try to move clips does everything freeze up for about 20 seconds. I tried disabling CUDA, creating proxies, changing the SSD that the previews are saved onto, even swapping out the source files for lower quality versions, all to no avail. I believe the issue has to do with rendering previews since there is no problem when I disable all the visual tracks. The files I'm working with are fairly long, so maybe that's part of what's causing the problem. I have no idea how to fix this issue, but it's making editing virtually impossible. Thanks in advance to anyone who may know a fix.