(I didn’t see a way to edit my post so apologies for bumping my own post.)
For anyone else trying to get EQ2 to work, I wanted to update and add that I seemed to have solved my problem. I tried the Planetside 2 profile again, and this time I made sure to exclude GameLauncherCefChildProcess.exe, EQ2.exe, and LaunchPad.exe. Then I added everquest2.exe to the Planetside 2 profile and launched the game through Steam and the launcher like usual. With that, Geometry 3D is working now!