Rig crashing for no apparent reason

I have a rig with 3x 3080 FE and the rig shuts down for no reason. I had 2 3080s a couple days ago and the rig was completely stable. After adding the 3rd card the rig crashes after an hour or so. I have:

Installed and checked that drivers are up to date.

lowered core and memory clock speeds, and lowered wattage just in case.

increased the paging size in advanced settings to like 30gb just in case.

it still crashes, but it is fine with 2 cards. Im testing if it does the same thing on ethereum right now. HELP