Relax ... not a problem which can't be fixed. I'll try to help. Until then, DON'T MOVE!
When ingame, go to the SteamVR Menu (whatever button this is on your controller).
There are visual settings for ...
1. steamVR in general and
2. every apllication running via SteamVR
Make sure both settings are set to wether default or change the resolution scale to "1".
In VaM there's a scale settings as well under "settings". Make sure this is set to "1" as well.
If you combine both settings (in SteamVR and in VaM) you could technically get absurd high pixel density via upscaling.
For example (mathematically): 1500x1000 (1.500.000 pixels) at scaling "1" in Steam VR but scaling "2" in VaM is already 3000x2000 (6.000.000 pixels). So that's 4 times more pixels!
Example 2: Scaling "2" in Steam VR would be 3000x2000 (6.000.000 pixels) plus scaling 2 in VaM would be 6000x3000 (18.000.000 pixels), that's 12 times more pixels from your original resolution. Insanity!