Box jittery on 1080p 60fps

Hi there ive had my zgemma h9s for a while now and i notice its very jittery on any channel at 1080p 60fps even on a sat channel to make sure it wasnt my line for iptv.
But if i select 2160p 30fps because my tele is 4k it now seems smooth very smooth .
but my sports channels are in 50fps so id idealy like to stick with 1080p 60fps.
ive changed my player to extplayer3 5002 didnt make a mountain of a differnece any help would be greatly appreciated .


TK Veteran
you should have it 0n 50fps for anything broadcast in europe., only the us and a few other counties use 60hz, if in doubt use auto