I'm running Windows 10 Pro Version 21H1 OS Build 19043.985 BlackWidow Ultimate Tartarus V1 (I have a Logitech G502 mouse, and have tested with it connected and with it not connected, with and without drivers.) Fresh install as of May 31st 2021. Everything was going fine and then I installed Synapse 2.0 because My devices are not handled by Synapse 3.0 I setup up my power button to turn off my displays when I press it. (the machine does not power down or go into sleep mode. This is by design.) That works great! Then I install Synapse 2.0 and reboot. I log in (note before I log in. I can press the power button and the displays turn off.) Once I log in and Synapse 2.0 updates from Razer.. I can no longer turn of my displays by time out or pressing my power button. When I press the power button, the displays go blank for about 2 seconds. Then come back on. I did check the box to turn off illumination on my Razer devices if the displays turn off. And for a moment they do go dark when the displays turn off, then come right back on. Even if I close the Synapse 2.0 application. I can not make the displays turn off as they should. Any help would be greatly appreciated as my devices are basically dull bricks without synapse. My previous version of Windows 10 worked fine. Likely because I hadn't updated to the most recent version of Synapse 2.0 Additionally: If I remove Synapse 2.0 everything works as expected. And I have removed and reinstalled several times.