Stutters ingame

Periodically (Anywhere from 4 to 30 seconds) my game just doesn't take any inputs like moving, sum spells, and items that last for a second or two. Afterwards it then does the inputs i did while it wasnt working so if i throw a snowball it throws it after i can finally move again. This is not because of ping or frames (capped it) and when I switched wifi and computer the problem still persists. How do I fix this?