Hi, I've got a brand new Predator XB273. I've set it to 4k 120Hz refresh in the nvidia Control Panel (RTX 2080 GPU) as well as the Windows Display Settings. It works fine, but after it wakes up from sleep mode, the refresh rate drops by itself, and very noticeably so. The maximum refresh rate that you can select dropped to only 30Hz. Another time it dropped to 82Hz. Higher refresh rate options are no longer available. I restart the PC and then 120Hz comes back as the maximum available refresh rate. Please advise, because it's not right that the refresh rate and the maximum refresh rate option changes itself after the monitor wakes up from sleep mode. Thank you.