gopro 10 hevc problems

[nasruddin]

I'm experimenting with a gopro 10. I'm seeing stuttering videos: video + pixelated gray screen + video + pixelated gray screen &c
I get this on one of the higher quaiity default modes (5.3k/30 - cinema). I believe this is an HEVC containing mode.
I don't see this problem on Basic (1020/).
VLC is 3.10.16
Platform is Windows 10 10.0.19044; an HP Pavilion from 2010.

I've tried turning hardware acceleration off, no difference (default setting is AUTO)

I have not tried converting any of these videos with handbrake or the like to downgrade & get rid of hevc.
I do not know how audio is affected; the scenes I've tried this with happen to be completely quiet.

Is there anything that can be done to fix this? Is this a fundamental hardware problem, a Windows software problem, a VLC issue, or some issue with GoPro?
Any ideas appreciated.

[Lotesdelere]

Please open Tools -> Messages (set Verbosity to 2) before you start the playback, and then paste the full resulting log here or on Pastebin.com if it's too long.

Also upload a short sample of your original problematic file to Zippyshare.com or to WeTransfer.com and then post the link to the file here.
https://www.zippyshare.com
https://wetransfer.com

If needed cut it with DGsplit and read here about how to do it:
https://forum.videolan.org/viewtopic.ph ... 35#p193335
200 MB max should be enough.