FlyByWire A32NX Low performance due to CoherentGTUIThread limitation

Discussion Hub Aircraft
1

Hello,

I have installed A32NX 0.7.3 the latest DEV version and a problem with low FPS due to CoherentGTUIThread limitation. During T/O the value of the CoherentGTUIThread increase on 45ms (MainThread=20, GPU=18) and this is the reason that I have FPS below 30.

The value of the CoherentGTUIThread is changed during the different phase:

  • On Cockpit Dark and Cold is 15ms

  • After Engine start is appr. 30ms

  • During Take-Off is 45ms

Another think is that the GPU Load is at the beginning (DARK and COLD) 90% and than dropped to 60% - 70%. CPU load is between 40% - 50%.

On all other Aircraft CoherentGTUIThread is normal and have not impact on FPS and GPU loads is 100%.

I use 1920 x 1080 on DX11, more or less HIGH END settings on notebook Asus G752VS with i7-7820HK, GTX1070 (8Gb) and 32Gb.

Nvidia driver 496.98.

Any idea how can I solve the problem will be very appreciated.

Thanks

1 Like
2

CoherentGTUIThread is basically the FMS/Avionics code. Not sure there’s much you can do other than waiting for performance improvements or a hardware upgrade.

3

Thanks for explanation. In the fact that I have a Notebook, hardware upgrading is not so easy.
If this is a code for FMS/Avionics that means that problem may be on my CPU i7-7820HK.
But on the other hand it is strange that no one has encountered this problem so far (I checked on many forums to see if was anything written about this problem, but found nothing).
As I written on my previously topic on all other A/C I haven’t noticed that problem.