Messed up sprites flickering over whole screen on multiple machines while moving

I have this little test build to check if everything is right and no, it's not right at all, it's hard to describe it but I will try my best to do so, in case anyone will see this and can help me... When I open the program, newly placed tiles, every time new object is created, every sprite flickers for split second (random generator places objects in world, then just stops when reaching the limit), but it doesn't end here... when I move, it looks like newly created sprites are created on runtime from the ones that are on screen and they flash on the screen in weird angles shapes and positions of screen (happens with everything but player sprite, as camera is centered on it) By the way, it is NOT camera problem, I already tried to fix it with camera directly following the player then rounding it's position at the nearest pixel so camera stays pixel perfect without trying to chop off pixels, and it changed nothing at all, still same sprites which are currently in the scene, being rotated randomly and stretched into different shapes just like it would reload sprites from resources every time I move... I load sprites from resources folder once, then I set sprites on tiles ONCE, then stops and don't operate anymore, but it still flickers randomly, I have no idea if I can post the built files here, but I will for the sake of it, so you can clearly see my problem: https://www.dropbox.com/s/82jz8w293kqjmzn/trash.rar?dl=0

I hope someone can help me, I googled for the whole day, tried many things (changing sprite settings randomly, literally tried anything, nothing changes anything, except because of some settings sprites get blurry and that's it..., I mentioned camera too, nothing helps, same annoying sprite flickering which hurts eyes more than any screen tearing ever does)

P.S. it also happens even if I add sprite manually and stop adding it in code and forgot to mention that this happens only IN BUILDS, IN EDITOR IT LOOKS PERFECTLY FINE HOW IT SHOULD.