How long have you been a Cubase user?
Why did you choose it in the first place? What features did you need that you could get from all the other DAWs you have installed?
Sounds like it was–and possibly still is on your machine.
That “rule” doesn’t do anything to protect your machine from malicious code.
It seems like some of your Cubase issues are related to your Windows system-configuration and system-management choices. Windows isn’t going to stop you from installing applications that lead to conflicts.
The settings in Studio One have nothing to do with your Cubase settings. The metronome in Cubase obviously works fine when it’s properly configured.
Once again–that’s not a problem with your DAW–it’s a problem with your system-configuration. A “complete uninstall and reinstall of Cubase” might help in some cases, but it’s not going to make a difference if the settings and configuration are still wrong after you’ve done it.
Sometimes you have to read the manual and do some troubleshooting.
Your outstanding issues aren’t due to the poor support you received from Yamaha. If you want a reliable Cubase DAW, you need to build it up a piece at a time instead of throwing it together without understanding the impact of your decisions.
Well?