Hi, I know that this is an old thread, but thoud to post the solution anyways for someone in the future.
I had the same problem, I restarted my PC and ran VAM without SteamVR. Everything works now :)
Here is detailed guide...
Hi, I had the same problem, I restarted my PC and did what T_bob wrote. Everything works now :)
Here is detailed guide: https://hub.virtamate.com/resources/how-to-launch-without-steamvr-performance-increase.30496/