Operate becomes slow and takes time in navigation to Processes when number of processes is more than 20k

Operate becomes slow and takes time in navigation to Processes when number of processes is more than 20k.
I am using Camunda version 8.4 and installed camunda on Openshift using helm charts. I tried increasing memory of Operate pod, but it didnt help.

Please advise, is there any workaround or fix we can do to improve the performance.

Thanks,
Shilpa Chalke