It's the network connection. ED is extremely finnicky with packet loss or something like that. I've played multiplayer FPS for months via PowerLAN and never had an issue; but with ED even in Solo mode I kept getting Mauve Adders without end. So I grudginly drew a Cat7 cable through the flat and lo, haven't had a Mauve Adder since. Switched back to PowerLAN to verify: Mauve Adder. So Cat7 it is.