Thanks for sharing. The download was almost 20GB. VP reported numeous missing files - perhaps the ones that you didn't mean to include. Thus, there are many gaps in the timeline.
Because the project is 4K, caching time would be inordinate for its full 39 minutes. This suggests using Proxy editing, a common practice with NLEs where much smaller files are edited, then the original are substituted at export. https://nch.invisionzone.com/topic/26563-proxy-editing/ to greatly reduce PC load.
Or the project might be broken into small chunks - perhaps a few gigs each - with each exported, and later assembled into the final.
Using the 64-bit 12.33 release, the gaps were eliminated and a one-minute, two-second extract was exported at 480, AVC, 60fps. That took about 15 minutes. Extrapolating from that, export of the full project at HEVC 4K seems prohibitive.
The jerkiness on panned shots shows up in another NLE as well, though they are clean in a viewer??
The program is being constantly improved and these issue have been reported. Stay tuned.