Have you performed the steps outlined here (the installation of the updated Intel media driver isn’t needed; the important bit is enabling GuC)?
Further reading (point 3 under “Known Issues and Limitations” at the bottom of the page):
The upshot is that for kernels version 5.8 and later HuC loading is disabled by default on JasperLake.
I use HW acceleration on an N5105 with server version 1.32.8.7639 and it works well. There were some recent issues, but I believe that was back in the 1.32.6’ish versions (too lazy to go back and verify at the moment).
