Z Mini problem

I have problem with my z mini.

I have tried 3 different z mini and every has the same problem after update to the update that came around new year

I have tried everything but nothing works so i think its the firmware that need to fix

The problem is that when i see a channel with 1080 it stuttering little

Same with Tivimate app

Series and movies work on 1080

When i whats hockey it is good for 10 sec and them it stutter all the time

I have not test 4k but 720 works

I have test hz 60, 50 with and without auto frame and res att 1080, 4k and auto res

EU

Have delete the MOL3 and install it again clear the cache

VPN on and off

Mobile internet from my phone and my router

Also the buffertime

And same with Tivimate so its not the MOL app

Have tried that also

But it works on my Z11 pro max