Sadly, despite what Bubble say, adding capacity (which is a paid-for feature, which makes it worrying) doesn’t allow your workflows to run any faster, or to have more of them.
Firstly, doing a “bulk” operation is really flawed in terms of capacity, and simply ticks over at 1 operation per second NO MATTER WHAT PLAN OR BOOST YOU ARE ON.
Suggest you avoid using bulk for anything more than a few items. It is pretty bugged as well on larger lists (I ran one for 10 hours last night and it did NOTHING).
A workaround is to create a recursive workflow, however, you need to be very careful here are there are significant bugs with the way data changes are picked up by the scheduler.
Secondly, adding capacity does not change how many workflows run per minute at all.
I hope Bubble sort this out, but in the meantime, I will be using Xano for anything remotely bulk data related. Which is really pretty sad.