Console (PS4) - Killer-only lag issue

TL;DR Only experiencing lag when playing Killer. Makes chasing impossible.

Since the Bubba announcement, whenever I play Killer, I lag too much to actually play the game. As in, I literally tip-toe mid-chase because it moves my character back for no reason. But when I play Survivor, everything is fine. And I'm not the only one experiencing this, it is extremely noticeable from the other side (Survivor).

Before you ask: Internet speeds of at least 10Mb/s up, 400Mb/s down. Only started recently. Only occurs on Killer.

Edit: Ping (can only see on Survivor) between 60 - 100ms, playing either role