Default space creation task always gets throttled

[BillCarsonFr]

Description:

When creating a simple public space, the client will create 4 rooms in total (the space room + 3 default rooms)

Actual:
The 3rd room creation call will error with
{"errcode":"M_LIMIT_EXCEEDED","error":"Too Many Requests","retry_after_ms":8060}

=> As a consequence the creation experience is very slow

[ShadowJonathan]

We got a meta-issue for this (just) now, thanks for notifying tho 👍

[jaywink]

This also happens when adding rooms to an existing space - on my homeserver 10 is the most I can add at a time (v1.31.0) and the rest silently fail as the rate limiter kicks in. It doesn't look like Element retries the rate limited additions (v1.7.24.1).

[clokep]

As mentioned above, I believe this should be better in Synapse v1.31.0 where the burst rate limits were increased from 3 -> 10 in #9674. So I think from my POV this is done (as creating 4 rooms at once should be fine)?

[clokep]

I'm going to close this since the default should work fine now.