Trumotion and tv feels laggy

Hello guys,

few days ago i bought LG UA 75 55" and the TV is kinda ok but i have two problems.

1. When i watch something like Welcome to Wrexham documentary, non sports parts are ok, but when it comes to footage from the game (football/soccer), the TV starts to feel very laggy. Like very low fps. Is there any solution for this? I tried different screen modes but it doesnt help.

2. I am not able to turn off Trumotion. All the options in clarity are grayed out and i dont know how to change that

Thanks for any help.