graphic leg in start menu and while playing a game in a tank

[stevenfelleman98]

Brief description: graphic leg in start menu and while playing a game in a tank 
 

Detailed description, conditions:  when i start the game up on my laptop and come in to the menu my curser stuttering when i move it over the screen. 

and whene i play in tank and look down my scoop and i fire my gun my  screen get al like this(look at the picture below) . can some one help me to fix this?

Edited October 11, 2019 by stevenfelleman98