Have similar problem Aerocool project 7 750W - shut down randomly with 2080ti + Ryzen 3600XT (new build with second hand GPU).
Changed to Corsair VS 450W - no shutdowns at all (even power budget is very tight max 420W vs 450W PSU).
Basically low quality PSU don't handle bursty load well.
Now looking for an established PSU brand and hope to return Aerocool to **********.
That was I thought as well spending 100 pounds on it... It has no problem powering GPU in GPU burner and looks cool, but does not handle bursts of load in real games.That doesn't make any sense. The Aerocool Project 7 is a good quality psu whereas the Corsair VS is low end. You have basically swapped a Ferrari for a Skoda. That Aerocool unit should have no issue powering that setup.