Played without issue for four months. Now, same PC, new GPU, and I can't log in P99

[Agreed]

My specs are Intel 12900K CPU, 64GB VRAM, and AMD 9070 XT card. Previously I used an nVidia 3080 12GB, swapped to the new card and now I can't log in to P99. When I select the P99 blue server and hit Enter or click "Play Everquest," the client just freezes for a bit and then kicks me back to the first login screen.

This is happening with WinEQ, and I've tried installing DGVoodoo to use the default EQgame client as well, happening there too. I tried making it use my Intel on-board GPU, which is way weaker than the 9070 XT is (or the 3080 12GB was), no change. I've tried limiting to just my Efficiency cores, no change. I cannot join the P99 Blue server no matter how I try.

I had a lot of fun playing this over the years, and in the last few months I doubled down on the grind and got my monk to a higher level than I ever did before, got a Fungi Tunic and a Tranquil Staff and a bunch of other gear upgrades from grinding Highkeep like a madman. Now I can't play at all it would seem and all that feels like more of a "waste of time" than just gaming usually is, I was thinking I'd be rocking with my guild raiding soon.

Anyone have any ideas of what I might try to get logged in once more and playing? I don't understand how changing to an AMD GPU could cause this problem or what I can try to do to resolve it. Thanks if you have a notion.