DirectX is up to date Tried through steam and uber launcher, crash on both Have computer running in clean boot mode, have PA being the only program running No known software conflicts. should have both my dxdiag and latest (most fixes attempted/longest time spent working) crash log.
There is sometimes a problem with the Afterglow headset in combination with PA. I know that Uber investigated that one a long time ago, but I don't think they managed to ever find a fix for it. In any case, could you try unplugging your Afterglow headset and see if the crashes still occur? Also, an odd thing is that the DxDiag.txt you posted complains about crashing while running itself, but try the headset thing first to see if that's the cause.
I'm sad to report... that this seems to have fixed it. So far, since unplugging the afterglow headset, the game hasn't crashed randomly, nor at typical crash spots. I'll give it a day or two, but if you don't hear from me in that time, consider it all smooth sailing.