Monitor not going to sleep mode in Windows 10

I bought the Huntsman elite a month ago on my old PC. I experencied my monitor not going to sleep after set 10 minutes. Started to Google for the problem and it turns out its a HID conflict (Human interface device) occuring when I connect both my Huntsman and the Thrustmaster throttle. It seems alot of virtual ink has been spilled over this topic but no sollution was found. I also get a weird runtime error message when I shut down my pc from time to time, also started with installing the keyboard. (I have to write it down when I get it next time). ACTIONS: - Energy settings in Windows are correct! - New PC (Win10 Pro) vs Old PC (Win10 Home) - no avail. - I did not install the Synapse SW when I built the pc - no avail. Without the synapse installed monitor would not shut off. - Uninstall Synapse 3.5 again - no avail. - Unplug the thrustmaster: yes, works but I play FS2020. Can anyone help me? Thx!