[HELP] Can't use DGDecNV with an RTX 3080

[Selur]

Does DGDecNV get disabled/ignored if the CUDA check fails?

yes.
When Hybrid reports the CUDA Check it will report the exact names of the cards it checked, if you can tell me the reported name of your 3080 I can add it to Hybrids list of cuda supported cards.

Cu Selur