Unable to supersample Valve Index in P3D v4.5

[Highflyer747]

Hello.

I ssem to be unable to supersample the valve index using steamvr in P3D v4.5 above 100%.

I can lower it to below 100%, which makes visually a huge difference.
However, increasing resolution in steamvr settings to say 170% makes visually absolutely no difference compared to 100%.

I'm running the index at 144Hz.

Any help would be highly appreciated.

Best regards,

Toto