Corsair SF-L are the best SFX(-L) units.
Review of the SF850L https://hwbusters.com/psus/corsair-sf850l-sfx-l-psu-review-the-best-sfx-l-psu/
Review of the Loki https://hwbusters.com/psus/asus-rog-loki-sfx-l-850w-psu-review/
Review of the Lian Li which is not a native ATX3.0 PSU...
That's a terrible PSU. https://www.tomshardware.com/reviews/aresgame-ags750-power-supply-review-less-efficient-than-wed-hoped I don't recommend to use it with any (semi) high end GPU.
What's the brand and model of the PSU?
What's the brand and model of the RAM and why did you get 4x16GB instead of 2x32GB?
Test with 2 sticks in A2 and B12.
Is the motherboard BIOS fully up to date?
That's a garbage group regulated PSU with terrible voltage regulation. It's closer to a 500w unit than 600w. So no, it's not recommanded to use this thing with any GPU that requires additional power.