Low Cruise Performance

[Chris L]

Hi all,

I have recently discovered that I can't reach the cruise speeds anymore according to the Performance Tables.

I haven't flown this bird for a longer time, but I have upgraded now to 1.1.13 and X-Plane 11.53.

At FL 290 (ISA conditions, 3000kg Takeoff weight) for example, with 92% TQ I reach about 310 knots - compared to the 322knots. But no matter which FL, always about 10-12 knots slower.

I can remember, this wasn't any issue some time ago, the performance was always very accurate.

I have tried: Clean TBM Install, Clean X-Plane (No custom scenery, No Plugins), Experimental flight Mode on (allthough it should default to it)

Has anyone the same issue? Any advice?

Thank you for your Help.