When I made my initial post I assumed you played on US East (from a US East location). Assumption was based on your recent posts.
I'm pretty sure everyone who still plays LoD are experiencing R/D issues since end of last season.
By everyone I assume you mean everyone on US East. Does "everyone" on US East in fact experience disconnects? Do you mean everyone on all realms? If so, that's wrong.
From your latest post it seems you are playing on US East from Europe and you've recently moved from one European country to another, and now experience more issues. If so, the problem seems to be partially on your end.
158.115.217.53 - Currently the server you connect to when you save & exit on US East, amongst other things.