I have the same stick... and use a g930 headset ... I have had this a couple of times since the windows update... not to the point of having to log out ....
My initial start up after the update...the game didn't find a sound device ... Unplugged the headset and restarted...the only issue I now have is my headset will switch off and restart every now and then...
My stick ....when i lose control I also get a long game pause... I do think it is related to the sound as it only really happens if there happens to be a new sound with a bunch of other sounds going on at the same time... I don't know how to explain it.... having normal sounds of tanks, gunfire, tanks firing, bombs hitting ...and then a new plane/tank/gun fires...new sound enters...
I have gone into settings and turned things on and off...and wiggled the wires....hahaha seems to have slowed the problem...But I believe it is a PC error from the windows update on my end...