cursor keeps freezing in-game?

ok, so i've had a couple of normal pvp games now where my mouse has frozen in place, causing me to click back to base the moment i can get it to move again. it has only happened during normal pvp games so far. the cursor does not go invisible or teleport, and the mouse is not having delayed reactions since i have to complete actions once the cursor unfreezes. i think both of the games i played with this bug were me using lux, but i wouldn't swear to it cause i have a bad memory. do something about this please. it only happens in-game, so my mouse isn't the problem.