Do you use settings like AllQuestsAvailableFromStart or AllTradesAvailableFromStart ? Do you use Barter Only? AQM do not change anything in EFT logic, only uses existing one, but maybe there is some kind of mod conflict or too many quest/messages from traders causes this on some rigs
I don't change the AllQuestsAvailableFromStart or AllTrades I only use AQM for the wonderful array of quests available which just happen as you play.
It was one of the first I removed but it still happened after so I am guessing it was not that. I did find something odd with my mods (I stupidly copied them from my old profile) they had the wrong location in them in the module log. I have done a fresh start and have my Raw untouched mod store which I will copy over and make the changed to now. Just got to play a couple games of unite with the lad first, damn pokemon!