Actually I did that to test my quite old vidcard - Radeon HD3870/512. At the beginning the slider was set to "None" as default, one or two notches didn't change the situation. Adding more resulted the "old" dull gauges, seemingly disabling the new effect. All that during flight. Back to "None" or 1 notch brought the effect back after some time and a couple of deaths, still showing the tower. Oh, and the bulletproof rear window in 109-G6 seems to be made of same sort of glass. Would be cool if it reflected the cockpit rather than showing tower floor planks.