Ipad Pro 10.5 display problem, tearing image, jittering..

Bought ipad pro 10.5, 20 days ago.

Replaced one few days after i bought it...cause of popped up, curved display in middle.

Got another one, on which display looked more flat than one before (but nowhere near to flatness of display on ipad3), but anyway I settled with it , thinking i could get even worse one than first one 😟 ( talking about "premium pro product" ...)..

Anyway, i used it in periods of 5-10 min. max. then rest of hour on ipad 3 cause of discomfort that ipad pro giving me. My eyes hurt, my vision is blurred, and if i use it more than 10min., head start to hurt (playing game, reading, no change same thing happen). I’m sys admin, so i have tried changing every single settings which can be found on internet, nothing helps.

Regarding text on ipad pro :

When i stop scrolling text on ipad pro I can see pixels forming letter, getting bolder (outlined) , can’t be that slow ?

When i scroll text or move game its like picture it's tearing, jittering random, distorting, stabilizing picture and not scrolling.. (no smoothness at all) like some unfinished product, is it supposed to be like that ?

I have ipad3, iphone4,5,6,7,SE. and image quality, text quality, display, picture is suberb to this 10.5 which i got, are all of 10.5 like that ?

Period of 14days in which i can returned has passed, what are my options ?

I really liked 10.5 option cause of music software that i use, bigger fadders, more customizable controls but if i can’t watch at it..

btw. have another problem with it.. Ipad Pro sometimes breaks my WIFI for 10 or more minutes (random), using only 2.4GHz Wifi..

Thanks in advance.