[GAMEPLAY] In game Microfreeze

Not sure if this is actually a gameplay bug or a client-side problem, but nearly every game, I get these random half-second or so freezes. Usually, it occurs right before my first CS of the game, which isn't really a problem, but I Smartcast my spells and occasionally, when I activate an ability, it stutters and instead of launching the spell wherever my cursor was when I pressed the ability key, it launches it wherever my mouse was after it unfroze, usually away from my target.

I've died a few times because my Light Binding didn't bind their light or my Piltover Peacemaker didn't make any peace. Is anyone else suffering from this issue? What fixes have you found?