Data point:
At Rio DeJanario in a Diamond DV-20 with video presets set to (mostly) high, Vsync set to “off”, ray tracing set to “off”, and the sliders set to 100/150 as preset by the game at initial startup:
Here is the current configuration list for my system:
https://forums.flightsimulator.com/t/what-ive-done-with-msfs-2024-so-far/689826/2
I replaced my motherboard due to a stupid mistake on my part that damaged the original MoBo and I tried some relatively aggressive tweaks. The result was an unusable game as it stuttered very badly as if the frame-rate was essentially nil. I returned to the MoBo settings, cleared everything to default, and set the usual “low-hanging fruit” settings I used on the prior MoBo.
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Allow the system to access the full 16gb of my VRAM rather than only the first 256mb.
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Set the ram timings to the XMP settings rather that the very conservative “default” settings.
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Turn off the ability for things like PCI and RAM to “idle to sleep”.
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Disabled virtualization, hyper-threading, and all hardware encryption.
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Allowed automatic overclocking.
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And maybe a couple of others I don’t remember.
The result of this was a much smoother game that had respectable frame-rates.
It should be noted that I have NOT tried any “tubeliners” as my flying skills aren’t sufficiently high to allow that.