So a few weeks ago I had the same problem as today, my video was not loading, only the audio and I couldn't scroll trough the clip. After reinstalling the latest drivers for my GPU I saw a setting in the AMD Software: Adrenalin Edition on the DaVinci app that was called OpenCL Triple Buffering and after turning it on it worked. Since then I haven't used the program. Today when opening I had the same problem as before, only the audio was loading. I will leave here the specs, logs, dxdiag and the video so maybe anyone can help.
Specs:
CPU: Ryzen 5 7600X
GPU: RX 580 8GB
RAM: 32 GB
SSD: 1TB Kingston
https://w ww.dropbox.com/scl/fo/mktal438ifnh669tgpjo4/AF2UrP4yXmq_42SWe9yWlbE?rlkey=hwcosgwpj27yq51x93qk6m5ou&st=a14e07ze&dl=0