Ok ... I can't say for others but for me it works this way :

I played high lvl character now its 77 ( exp lvl to 160 ) but disconnections started at some point along the way , I can't remember what lvl exactly
I often get crashed , disconnected , bugged during expeditions but if i menage to the end or exit after 1st or 2nd map in 100% time when I get to town and move from portal in town i get crashed.... every single time ... not 80% , 90% - every single time .. solo group doesn't matter ... If I stay near portal and start new one , then its ok ... very strange but it is like that

I was tired of that and started new character , lvl it to 43 ... with that one I'm playing expeditions since lvl 20 , now I'm on exp lvl 53
i didn't get disconnected NOT ONCE , no disconnections , no crashes , nothing

I switched back to old 77 one and hop game crashed immediately ... fascinating s***

what can possibly cause crashes at high char lvl and not effect lower ones ???

Is anyone have some similar experience ?