I can tell you that my performance before WU6 was terrific. After installing I had single digit framerates on runways when taking off and panning around, essentially unplayable. Switching off photogrammetry resolved the issue immediately. Attempted everything to fix it, read every thread, nothing worked. Finally reinstalled Windows after hearing the success of other users and it instantly fixed the photogrammetry issue. Since then, I have read many users having the same success.