[popcornmix]

Tried the settings from 8 to f but unfortunately no change.

You can check the setting has applied from log or by running:

Code:

vcgencmd get_config hvs_priority

bagofcrap24 did see an effect from this setting (but not a solution).

Can you both try:

Code:

hvs_priority=0x0N000000

This will lower the priority of the 3d hardware doing the deinterlace.
Using 1 should be minimum priority, so I'd expect no artefacts, but you may have lagging.
The default is "e" (which you also get with zero) which is very high priority. I'd be interested if that setting has the expected effect.
If artefacts are fixed, then finding the highest value without artefacts would be useful.

If you have lagging, that can be improved by increasing v3d_clock. e.g. v3d_clock=400