The Predator III - Assassinate Champion Frainn can't be completed due pre-event stalling

I stumbled upon a bugged event for Predator III (Assassinate Champion Frainn, Kill Champion Frainn and put a stop to the Mighty Oouo in Timberline Falls) where the previous event needed for it to trigger stalls (Whispers NPCS don't move or do anything) and you can't do anything about it. Already made a ticket (Ticket #6709470).

Also getting this.

Is it fixed yet? Still waiting for the event to trigger ...

It's not fixed, I had to hop instances endlessly until I got a working one. Make a support ticket if you can't get a clean instance so they mail you the item.

What I did was used the Springer to hop into Frainn's chamber and parked there. I then swapped to my toon there whenever I wasn't otherwise engaged and just now, someone had soloed the event chain, so Frainn was up and waiting for me when I spawned. (Interestingly, the soloist wasn't there for a collection; just likes to solo event chains.) (for what it's worth, IP was 52.90.155.96)

As it turns out, this wasn't after reset and there wasn't anything special going on in the map, so I'm not sure what changed. When I first spawned into the map to park, the event was definitely stalled: the escorts were at the end of the first event in the chain waiting... and waiting. The event chain description (that appears in the upper right of the UI) was absent.

If you want to accelerate the process, you can try the following:

• As soon after reset as possible.
• Whenever Timberline Falls is the target of a 4-event daily (check the wiki: it can be a core-only daily, which PoF & HoT owners won't notice)
• After guesting, you can sometimes get on a fresh map.
• Friday, Saturday, or Sunday: guilds do events, so fresh maps are slightly more likely to spawn.
• As soon as possible after a patch, in which case the map is guaranteed fresh (e.g. this coming Tuesday, which begins Wintersday).

It's super annoying that this precursor-collection-required event isn't reliable, but fortunately: you only need it to work once. Each time I was there (for the successes and the ones where I didn't stay to follow it through), I called out the event in /map and not a single person joined. It's about the only time in my GW2 playing time in which I've had no luck finding others (I asked because I know people are sometimes working on the collection; I believe that anyone with a good build can solo the chain).

tl;dr: park a toon in the event chain area (ideally: at Frainn, if you have access to mounts) and keep swapping until you are at the right time (since you'll already be at the right place).