Feel free to continue here. Your case is indeed very unusual. I did try this demo. And setting 30fps in it resulted in LFC giving out 90Hz while 60 would be OK. But demo itself behaves in very weird way. even limiting to 20fps utilizes my GPU to 100%. But moving slider to 500fps while I have RTSS global limit to 225fps results in 70~80% load. Sometimes utilization goes down to 5~10% while fps is maintained.