Description of problem:

While installing 3672 SNOs via Image based install operator there is a very noticeable delay in the time post a cluster is installed and when the cluster becomes managed as shown in the results graph. (Review graph with annotations showing delays) The delays appear to have began when 2384 clusters were managed, lasted about 20 minutes before clusters started becoming managed again. The next delay was about 30 minutes and you can see further delays. This behavior is much different than agent based cluster installs in which no large 20 or 30 minute plus delays prevent any newly installed clusters from becoming managed. 

Version-Release number of selected component (if applicable):

Hub OCP 4.17.3

Deployed cluster OCP 4.17.3

ACM 2.12 - 2.12.0-DOWNSTREAM-2024-10-25-20-49-39

How reproducible:

This has appeared in all 6 ibi large scale runs so far. so 100% reproducible in the scale environment

Steps to Reproduce:

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Expected results:

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