Started after March 3, after Path of Exile's Delirium league started. Usually happened under load, then progressed to being completely random, could trigger during a game 5 mins in or trigger during Netflix after an hour or so.
I took my GPU out, used my onboard gfx to run some stress tests. I could not get my computer to trigger Anti-surge while GPU was out.
GPU back in and messed with some overclocking, I could not get Anti-surge but I did get multiple white screens with "out of range" message on screen, or just flicker to black.
Put settings back to normal removed any overclocking, Anti-surge triggered within minutes of CS:GO.
I'm assuming at this point my GPU is the root of all this, idk.