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I've been having extremely low FPS in XPlane 11.26 (freshly downloaded yesterday with no addons) with my computer setup. I have no clues if I configured something wrong but I just can't get any of the recommended FPS listed in the manual.
In order to troubleshoot the issue, I downgraded all graphic options in XPlane to the lowest possible options (even removed parked airplanes, etc). I enabled the function to display FPS within XPlane and when I start a new flight, my FPS ranges between 11 to 17 FPS.
My computer setup is as followed:
As you can see, I believe with the hardware currently listed above, I should be able to obtain much better FPS. I understand that XPlane does not support SLI operations but even with one GTX 1080 Ti, I should be able to get FPS in the very high ranges when I have every graphical options turned off, not in the 11 to 17 FPS range!
Any help would be extremely appreciated!
Unfortunately, the drivers are the most up-to-date drivers for the video card (399.07) so this is not the solution. Changing the resolution of my 34in ultrawide monitor is also not a solution... it is already in 1080 (height) but the width is 2560 instead of 1920. If I chance this resolution, I get black bars on each side of my large monitor which creates a huge gap between my monitors.
So I did few testings to see if I could get a bit more of FPS. After reading numerous documents online, I hard-enabled the SLI in Alternate Frame Processing mode and changed few other options when launching X-Plane as X-Plane does not know how to handle SLI by default. I also increased all the graphical options to the following settings:
I have noticed the FPS counter in X-Plane provides a FPS count totally different than the FPS counter provided by NVIDIA. I'm not too sure why but the FPS in the X-Plane box are much lower than indicated in the NVIDIA OSD (between 7 to 14 compared to 38 to 46). I even further tested this by running the Heaven Benchmark tool and both FPS in the NVIDIA OSD and the benchmark tool were identical... I'm not sure why there is such a gap?!? Maybe because of the SLI???
I've also noticed that my flights were starting with 19 AI airplanes!!! As soon as I removed most of them (only kept 4), I gained few FPS there too...
I was hoping to get higher FPS with the rig I have but this is acceptable for now. I will keep on playing with few options here and there to see if I could gain few FPS without losing image quality.
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