Sudden insane performance improvement?

For me turning on “Turbo Mode (Experimental)” in OpenXR Toolkit (with Oculus Quest 2) = big WOW. This is the only one thing I set in OXR. Best performance I’ve ever had, no lags and stutters while turning during taxi. Now I was able to increase my VR graphic settings and still have 38 fps on FlyTampa Copengahen and PMDG 737-800 (RTX 3080). Previously I had ~24-28 fps with stutters during turns.