Did you know there's a fix for the Crusader's delay, that makes it hit immediately?
I don't think this fix works well off host. Sometimes it does, sometimes it does not aka turian stability. I've had a game yesterday with host in Russia, another player in Thailand, me on East coast, and fourth player was in UK. Lag was fearsome, around 500 msec, but crusader hit everything as aimed, no fix needed. ME3 matchmaking is legendary. I'm experimenting with ME pinger recently and it is very weird. Also, it would be nice if more people would run it and post statistics somewhere. Someting like host in a village in Poland, three other players in US, powers worked, lag 800 msec (highest ping value), extraction in 17 minutes, something else. I guess, people are used to huge lag so well, it does not matter unless you actually start teleporting or massively glitching. There is one problem with pinger utility. Sometimes, it either cannot ping, sometimes gives wrong location but ping itself is quite accurate and host can always be pinged. I think, not sure, it also pings Bioware servers and store when you are alone in the lobby or buying packs in main MP menu.
TLDR, if lag is from 200 msec to 300 msec and powers work reliably, crusader frequently hits as aimed, no fix needed and fix would actually mess it up.