It isn't happening like that, not on my system - the monitor isn't losing power, and all the driver settings in that regard are set to max performance. The graphics slowly start to move in slow motion, then freeze, shudder for an instant, then blackout, but you can still hear sound, even through monitor speakers - I tried switching monitors back to an older 144hz 27" Asus that wasn't 1440p or Gsync equipped just to rule that out. Plus you can see the power light of the monitor doesn't change, not until the game goes to tower after you crash, sits there for a few seconds as well - THEN when it ctd's the light will change for an instant, but that's completely normal.
I finally think I've defeated it, after many false victories declared, it would sneak back up and attack. Skuzzy nailed it, it HAD to be in the settings. The only frustrating thing is I tried so many important little setting "sneak backs" of bringing things over, that somewhere among about the 1/3 of the usual settings I would re copy in a reinstall, that corrupted file existed. So, I had to start all over, reset all the controllers, all the head positions in each plane (an ongoing thing), the sound settings (the biggest PITA trying to tune all those back to where they were), and so forth.
This was after a reformat of one of my systems, just to be sure it wasn't a driver that driver sweep missed or something - that gaming system has no important anything, and reformating now is a breeze compared to years ago, so nbd. However the issue still happened with the usual AH backup settings file I keep in a couple spots. The only answer had to be what Skuzzy figured - it was corruption IN that file, as everything else possible was checked and rechecked x about 10. You don't realize all the settings you change over the years and just don't think about until you have to redo them all. I flew around for an hour in the Ki43 thinking I'd really screwed up the stick settings or something, as I couldn't kill a thing, until I found the stall limiter and all the other boxes in that menu were rechecked. I'm finding things hourly like that, it's kinda fun. Still can't remember how to turn off the music on the start page, haha.