video player wrecking up screen resolution

[stuff.hunter]

hi guys,
just updated my Duo2 from Apollo 153 to latest Vix build and got a small but annoying problem:
when trying to play video files, screen shrinking and getting border around video screen which stays even returned to live tv screen.
The only option to fix it is GUI restart.
My setup:
screen resolution 1080p
A/V settings - no auto resolution

Any feedback highly appreciated,
Cheers,
Kris

[stuff.hunter]

..ok, sorted: auto refresh rate was messing up, changed to 50Hz and all is good :)