After Recent Win 11 Pro Update FlexASIO Incompatibility

[Muiren]

FlexASIO stopped working after the 2024-10 Cumulative Update for Windows 11 Version 23H2 for x64-based Systems (KB5044285)
I've tried completely uninstalling, clearing the registry, and reinstalling to no good effect.
It's impacted Vital Audio in Reaper, Ableton, and Standalone as well as all Arturia Software.
Any suggestions to further diagnose the cause?

This isn't a burning issue since I've fallen back on using Arturia's ASIO Drivers which were not affected, but I am curious if anyone else has had a similar experience and found a solution.

[dechamps]

This seems... unlikely. Can you share a log?

[Muiren]

I already uninstalled it, but let me get some sleep and I'll reinstall. It the problem reoccurs, then I'll copy the log and share it.
Would be great if this was just some coniguration issue I did without realizing it.

[Muiren]

This seems... unlikely. Can you share a log?
I copied two log files. The one is attempting to play a few notes in Vital Synth and the other recorded using FlexASIOTest.exe

The DirectSound default no longer works, but if I switch the default to Windows WASAPI, everything starts working again.
FlexASIO_FlexASIOTest-Results.log
FlexASIO_Vital-Synth-Results.log

[dechamps]

Your configuration contains:

bufferSizeSamples = 20

Which is nonsensical - that's 0.5 ms at 44100 Hz, which is completely unrealistic. This likely explains why some backends don't work (the backends that do work implicitly fall back to a larger buffer internally, but that's still hugely inefficient as that leads to many buffer switches per internal buffer).

I would suggest removing that line and try again.

[Muiren]

Switching back to Windows DirectSound, I tested at 256, then 512 buffer and dialed down the sample rate a little until I found a compromise that works