Webhook delays?

Hi all

I have a Flow set up for a client which fires off a webhook upon a customer being subscribed to a List. We’ve noticed really inconsistent delays with webhooks sitting in ‘waiting’, even though we don’t have any delays configured.

There doesn’t seem to be any clear pattern to this — sometimes the webhook is almost instantaneous, and other times we’ll see a wait of 2-3 minutes before it’s sent. There’s no reason that it’s hitting any sort of rate limits.

Are there restrictions or deliberate delays on webhooks that are undocumented?

Thanks