How long ahead are timer triggered flows and their resources put in queue?

I have a flow that runs every 10 minutes.
At 15:07 I uploaded a new resource (js-files) and synced it.

In /admin/processes I can see that:

At Startdate 15:09 the old resource was still used (it has a different amount of states than the new one so very easy to see the difference just by looking in that column). I was told that the worker runs in 90 seconds cycles so this seems fine.

At Startdate 15:11 I triggered the flow manually and I can see that the new resource was used.

At Startdate 15:18 still the old resource was used by the timer triggered flow.

At Startdate 15:28 still the old resrouce was used by the timer triggered flow.

At Startdate 15:38 the new resource which I uploaded at 15:07 was finally used in the timer triggered flow.

How long ahead are timer triggered flows and their available resources put in queue? More than half an hour seems like a stretch.

I'm searching support.onify.co for "timer" and "worker" but can't find much information about how this works and what to expect. Maybe I'm using the wrong search phrase?