so i just got done updating warthunder today after the LAST 30GB update to see there is another 25 ish one is that supposed to happen today?
are you using steam or the gaijin launcher?
as i havent been getting any updates recently so its possible that whichever one you use it detecting corrupted files on your storage drive and is reinstalling files around that to fix the problem
so it might be worth looking into if your storage device is dying on you