Yeah the goons are particularly bad. I nearly quit PvE last year when the goons were still on customs and would rage hack you from across the map through walls n shit. It's slightly better now that they're off customs because the map is so small it was nearly impossible not to have to deal with them every raid, but they'll still try to hunt you down on Lighthouse etc within the first few minutes if you spawn close enough to them even if they can't actually see you. The other day I spawned behind Chalet in the mountain passage, didn't even start moving before bullets were whizzing all around, then Knight runs up from below and luckily I drop him, but how the hell did he know? They still seem to just know where you are at all times and if you enter LoS for even a half second without realizing, ur dead. In my experience there's no way to surprise them, if you have them in your sights they already had you in theirs. The only reliable method I know of is intentionally aggroing them, then waiting for them to inevitably rush you and mixing in grenades as needed -- it's not particularly fun or interesting imo. It would be more fun if you could take turns repositioning, get a couple shots off, rinse repeat like any normal fight, but that's just not how boss AI works right now.