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Thanks for testing. That 18ms result is actually much better than I expected for a shared mode. It got me curious, so I tried it and I was able to replicate it with my Realtek (I got 19ms). I'm still a bit skeptical about its real-world use, because I've experienced some garbled/distorted audio with some low latency modes. I also can't find that mode in Reaper, which usually has everything. Still, it looks promising.

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Interesting, that's very close. :)

Since I had a bunch of software open and the system had been online forever, I restarted and tested again — turns out it squeezed a couple of ms to ~16ms on shared-mode.

By the way, I believe the low latency stack is enabled system-wide, so Reaper should already be using it.

For what it's worth, on my game I've been piping a SunVox instance to a 128-samples shared-mode WASAPI stream and haven't encountered distorted audio, yet.

At the end of the day, I guess I would indeed default to recommending WASAPI unless one has hardware with great ASIO drivers.

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