Doesnt follow flight path while using simrate >2x

[ch4pz]

I often dont have a lot of time on my PC and so i fly in the cruise using the Simrate function, but ive noticed everything above 2x seems to break the autopilot. It doesnt take much of a turn in the flight path to break it either, probably 10degrees, once you approach the waypoint, the plane seems to overshoot, then gets stuck in induced error corrections, basically weaving back and forth trying to catch the flight path, but it doesn't correct until you've already gone past the flight path, then does the same the other way. The only way to stop it slow to 1x or 2x, then it can catch it again. Extremely annoying on long haul flights.

There is also another weird bug at 8x speed, where the plane will just start porpoising the altitude (overshooting the altitude, then over-correcting, diving up and down), this does make 8x pretty unusable at the moment. Like the LNAV issue above, if you drop the simrate to 4x, it levels out again. 

Finally, both the Chrono timer, and more importantly, the fuel burn doesn't adjust for the sim rate, so, for example the last A330 flight i done, was 6 hours blocktime, calculated with simbrief and landed with nearly 30T of fuel still, putting me well over max landing weight. 

These issues arent limited to the A330 either, ive had them on all Inibuilds default planes ive flown (A330-3, A330-2, A321LR, A320N). With the upcoming A350, more people will be using this function i assume, so worth fixing imo.

[ch4pz]

Any plans to fix this?