Are you running EQ1 a modern multicore computer, but the framerate and overall performance of the game is terrible?
This is most likely due to the fact that Everquest merely runs via one CPU core at default.
Try this out, it might help.
Let me quote Sarkaukar here:
"By default EQ is set to run only on ONE CORE. With notepad edit eqclient.ini in the EQ folder, locate line(s) similar to this one CPUAffinity0 = -1 / CPUAffinity1 = -1 and change the number AFTER the equal key to a -1 (neg 1). This changes the behavior to spread the work across all cores instead of pegging just one core."
This is how the eqclient.ini looks on my system: CPUAffinity0=-1
I tested the above on my quad core NUC PC and checked the CPU load live via the process manager in Ubuntu 18.04.4.
Before: EQ was maxing out only 1 CPU core, leaving the other cores idle, 2 - 10 fps in game
After: EQ is now running smoothly on all four CPU cores, the work load has been distributed evenly accross all four cores, leading to a massive improvement of 40 - 60 fps in game
Night and day difference tbh.