Description of problem:
View cluster overview page consume high CPU if the cluster has thousand of VMs, looks like the overview is also loading VMs data.

Version-Release number of selected component (if applicable):
OCP 4.9.6

How reproducible:

Steps to Reproduce:
1. create about 2000 VMs in the cluster
2. view cluster overview page
3.

Actual results:
it consumes very high CPU

Expected results:
CPU consuming is normal

Additional info: