cannot alt tab out of league in windows 10 without client crashing

same here, It look like more a windows problem than a LOL one, in fact if you look at your task manager you can see the lolclient.exe is active and seem to work (you dont dc in game)

I guess the problem come from the win10 windows manager cause you can see the LOL windows working but do nothing when you click/switch on it..

Same issue, has anyone found a quick solution?