Description of problem: when browsing to rhevm > click on specific DC (in tree) > click on clusters tab > click \ choose some loaded (3K vms) cluster > click on the vm tab. not clear if's caused by bad DB query, or UI limitation Version-Release number of selected component (if applicable): rhevm 3.6.1.1 How reproducible: 100% Steps to Reproduce: 1. describes above Actual results: slow performance and UI crashed Expected results: good performance, stable UI. Additional info: