They keep fixing other bugs in the update but not fixing this problem what a shame!

I Have the same problem even before the new update. After 10 bullets of firing my screen stops for a 1 sec every time and I always restart the game multiple times so this bug will go… After the new pubg update 1.8 this bug is gone but What happened is 90 fps is literally 30 fps and not 90, and on the extreme (60fps) setting the touch is delayed (camera rotation is so slow.) I deleted the game till they fix it and if there’s no solution I’m gonna return my iPhone…