[yoerik roevens]

Is the hub powered? I had issues using too long extension cables so I put a powered hub for keyboard and mouse under my s3. Never had any reason to think it was Eucon related. I have a wacom tablet as well. It's not connected at the moment but I'll fire it up this weekend. Never now what will happen...

What happens if you use the Razor mouse without the Razor app (as a generic mouse just for testing)?
If it works, maybe try delayed start for the Razor app, so it only launches after Eucon has fully started?
I still have the impression Eucon is quite iffy on my Win10 machine. I never suspected the Razor, but since it acts weird from time to time I'll keep a closer eye on it.

Sorry I can`t be more helpful right now.