There is more going on in the systems of the TBM, than many other add ons. That's why we don't, and never have encouraged comparisons. No 2 add ons are created equally.
I've actually had this brought to my attention earlier this year, with the same plug in to check fps, and, sure, the fps varies, but when I tested this, to the naked eye, I couldn't even remotely distinguish the visual differences in fps, because they were so fast and unnoticeable.
Just enjoy the aircraft. If you're getting obvious "pauses", then we can take a closer look. But if the fps "stuttering" is not noticeable, then you can safely disregard it.