Is anyone also experiencing extreme slowness with getting lead activity through the REST API? For example, I have been pulling the "Email Bounced" activity type for the past 20 minutes and Marketo has only returned 1000 records so far. Normally 1000 records only takes a couple seconds.
Do you happen to have an example that's loading this slowly? The server-side timeout is well below that, so there may be some issues on the client side unless your requests are timing out and you're ending up with a boatload of retries in between.
Things have cleared up since.
I was seeing the occasional 604 Request timed out error from the API. Our retry logic waits a few seconds before trying again so as to to overwhelm the system or unnecessarily use up API calls. A couple of times I also received errors saying the connection was forcibly closed by the remote host. I was only seeing these issues with the get lead activity endpoint; none of the other endpoints we used seemed to be having issues.
If you see this again, I would file a support ticket with details about the calls you're making. Unless the instance is reciving many different calls simultaneously, the endpoint shouldn't behave this way.
I did file a case at the time but support hasn't reported anything definitive yet. Wanted to see if anyone else was noticing similar behavior.