Is X-Plane 11 Beta Throttled?

[Guest]

Interesting post from Ben here: http://developer.x-plane.com/

 

 

 

Threaded Nvidia Driver: I now know what you have probably known for a while: you have to turn the multi-threaded driver option off on NVidia hardware for X-Plane to function well. What is happening is: X-Plane is launching enough threads to use all of your cores for background processing, water processing, scenery loading, etc. and then the threaded driver is launching more threads.  The result is too many threads fighting for too few cores.

 

I've disabled multi-threaded driver option and performance decreased (lower FPS).  But this contradicts Ben's statement going back to 10.4x where "I think" he suggested multi-threaded driver option was fixed?  Somewhat confused ... maybe because I have 16 logical cores?  My GPU (Titan X) does peg at 100%.  If his (Ben) cores are grinding to a halt then it's most likely thread contention and/or HT ON getting into a deadlock state causing the drastic drop from 34 to 4 fps.

 

Might account for why some see such a difference in utilization and/or performance, I hope Ben can discover a "fix" because many 3D app/games do work better with nVidia thread optimization enabled ... including DOOM which is OpenGL also.

 

Cheers, Rob.

[odourboy 1,290]

With it enabled, XP11 was unusable for me (low single digit FPS stutterfest) with my flight usually ending in a GPU driver crash and a black screen. Runs very nicely with threaded optimization off. Polar opposite of your experience- but I only have 4 cores and no HT.

[Richard Sennett 2,499]

I had it enabled and disabled works fine either way - wonder if it has something to do with at least 32gig of ram which I have - dont know could be anything

[Guest]

Nothing to do with RAM, but could also be nVidia driver version related.

[Richard Sennett 2,499]

Nothing to do with RAM, but could also be nVidia driver version related.

 

New driver released  - yada yada  376.19 

 

http://www.anandtech.com/show/10887/nvidia-releases-37619-whql-driver-update-game-ready-oculus-touch-and-two-giveaways

[KNOSSOS 122]

I've tried Ben's recommendation twice - with my current driver 376.09 and the previouse one (don't remember the driver #). No changes at all.

(i7 6700K@4.5GZ GTX1080OC, 16GB DDR4 3200, 4K res. monitor)

[jabloomf1230 2,445]

Same here. The setting has no impact for me, whether on or off.

[Guest]

 

 

New driver released  - yada yada  376.19 

 

Unfortunately SSDD, once again the focus is Oculus and a bunch of games that I've never heard of ... Oculus support at all costs path nVidia seem to be on ... discouraging.

 

Cheers, Rob.

[houstonhear 0]

Never mind. . .

Edited December 6, 2016 by houstonhear

[jabloomf1230 2,445]

Unfortunately SSDD, once again the focus is Oculus and a bunch of games that I've never heard of ... Oculus support at all costs path nVidia seem to be on ... discouraging.

 

Cheers, Rob.

nVidia is just preparing for when the next generation of VR hits the stands next year.  If they don't, the consoles will bury PC gaming again.