Today we have problem with internet in our house. Someone accidentally blew the fuses in the whole barracks and the whole house's internet didn't work for several hours. But this is the first time this has happened in a very long time. I've experienced crashes even when there were no such internet outages
As for alt tabs, yes I do that quite often. For example when I edit a profile in the trackir or reply to messages in discord. I didn't know that alt tabbing can somehow cause problems in DCS.