Managed to get Verix to spawn after 3 hours, unfortunately I had some really bad luck with repops and ended up having a fully popped room, managed to root them all and started working on verix. Ended up dying after all roots broke just as a monk showed up at 10% to kill him and saw Verix' corpse fall on top of me. Don't think I've been this mad at a game since 97 playing Ultima online.
Soloing that room is a pain in the ass, with the increased spawn times its hard to space them out when it takes a bit to kill them, especially if caretaker pops.