Selling too much of all the garbage loot we get to only one trader (in my case it was Aaron cause he gave my druid good discounts) will irreparably corrupt all future save files, basically you will keep on crashing trying to reload. Happened to me when I wanted to fight the gith, which made me think githanki were buggy again, but then I tried loading other saves before even approaching them, but after unloading all my loot on Aaron, all of them were crashing while loading. I really don't know how devs can solve it, other than all the loot we sold resetting on the same intervals normal traders restock their goods.
Elfira's song's subtitles are visible anywhere, even from the other side of the map. All others aren't.
So have you found the culprit? What's the amount we can sale before it corrupts the save?