Turbo mode always caused a stutter fest for me so gave up on it months ago but tonight gave it another go and bingo, really smooth with High settings throughout. Only thing I know of is I’m using the latest nvidia driver. Anyway brilliant on my rtx4090 and i7 13700k.
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Right there with you, brother. We had our choice of green or amber phosphor CRT’s, a whopping 8 MB of 100 MHz RAM, and in the case of my Leading Edge PC clone, no hard drive, since a 9 MB HDD back then cost about $2,000. And let’s not forget a 14.4k modem, for blazing fast internet connectivity.
Kids these days think they’ve got it so bad…
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That’s the point 
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Turbo mode used to be a ZX81 whose screen didn’t blink every time the CPU did something!! And don’t forget the 16K ram upgrade pack.
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Anyway, back on topic, open xr toolkit turbo mode seems to working great for me now, be interested to know how others find it now?
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I’ve been using it for a little while now and see great results, similar set up to you with an overclocked 13700K and 4090.
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@pdixon0 @Tussalwater85
What are you’re other main OXR-TK settings (MR on/off, disable NVIDIA optical flow, Prefer frame rate over latency etc.)? I am asking because Turbo used to cause crashes for me so if I try it out again I want to mirror your other major settings as well. Thanks!
I suggest reading the 1st post in the thread above especially the part about “Prefer frame rate over latency” (applicable to WMR headsets like HP Reverb G2) vs. Turbo Mode.
Quote:
- Added option “Prefer frame rate over latency”. This allows an application to render frames faster at the cost of additional latency. It can be used in conjuction with motion reprojection. This is similar to the so-called “Turbo Mode” in the 3rd party application “OpenXR Toolkit”.
I strongly advise to disable Turbo mode in OpenXR Toolkit if you are using this option. The implementation in the runtime should be better and provide more accurate tracking prediction. There is no point in doing “double-Turbo”, this will only mess up your tracking prediction and not provide gains.
I’m using a Quest 2 so maybe my settings aren’t suitable for everyone based on the response above - but I am running DX12, prefer frame rate over latency in OXR Tools as well.
(Edit: prefer frame rate over latency is actually disabled)
The main thing for me was applying the Nvidia PowerMizer registry entries, as I’ve posted elsewhere on the forums, as this massively reduces the latency spikes as reported in LatencyMon and reduces stuttering in my opinion.
I also use ParkControl to stop cores parking as I feel it reduces stuttering as well.
When using Turbo Mode be aware of this:
Quote:
Turbo mode can also have undesired side effects:
Any statistics or performance measuring tool might now present incorrect data for frame times (however frame rate will be reported correctly). For example, on WMR, when using the performance overlay, all app CPU/GPU values will read 0.
Latency is increased, in a way that may or may not visible.
So funny you mention Leading Edge PC. I opened a computer store on Maui in 1983 and we became the LE authorized dealer/service center. Here is an ad I ran in the Maui News:
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For me it gives me smooth performance at even complex airports in the PMDG 736 locked at 30fps. Mainly high settings.
I remember velcroing that 16k badboy to the back of the ZX81, or it would crash as you were typing in the last line of a programme from a magazine, which had taken all day! Good memories, lol.
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I remember there used to be a conflict between Turbo Mode and either DX11 or DX 12, or a setting in OpenXR…I can’t quite remember what it was. Does any recall, and has it been fixed?
Dx12 is a stutter fest for me with turbo mode on.
Motion Reprojection conflicts with Turbo Mode to some extent, but the workaround is explained in the OXRT Manual. Nothing to be fixed, this is how Turbo works hacking OpenXR frame pacing for best performance. I recommend reading OpenXR Toolkit manual.
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Besides a shout out to @PacyFire “I think I had the very same PC, my first one!” - would somebody please care to enlighten me about this Turbo mode? Where is it? I have a 13700/4090 setup, too, and even though it runs pretty well, I’d like to know whether there’s a chance for improvement.
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With the MSFS which is lacking any manual we probably forgot, that good products, from good developers have good manuals:
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I don’t understand what turbo mode does. If it is active I see 98/100 of headroom but nothing change from the point of view of the performance/quality.
What am I missing?