All you mentioned was misaligned buffs, or sometimes missing text on your short duration buffs. It could be related, but all I'm saying, is I didn't realize you also had issues other than that, such as bags (brano).
I guess we can start trying some things, because honestly, I can't reproduce any issue on my systems.
1) If you don't mind, please post what video card you have, and how much memory it has. Report dedicated on-board memory, not 'total' including system shared.
2) Delete your aya UI directory in your everquest\uifiles directory. Then extract the zip for aya ui in there again, and don't change or add anything.
3) Use the loader, right-click on the tray icon, and check for updates. Ensure you have the latest MQUI_BagWnd.xml, if not, update it.
4) After doing those, in game, make sure you are on that UI, then do: /reloadui
5) If you still have the issue, log out of EQ, then delete your UI_toonname_server.ini, then log back in, and see if you still have the issue.
6) When you see the issue happening, check the everquest\UIErrors.txt and see if it indicates any issue.
Beyond that, I will try to get EQ, etc. all installed on my work laptop, it has a typical ATI mobility video card. It will play EQ, but it doesn't have a large amount of video memory, and is ati (instead of my nvidia cards), so I might see something there, who knows. The system I generally test with has Nvidia GTX 560Ti with 2 gig dedicated.
htw