This is a great write-up for those of us that were into Quake when it was released. Trying to tune your performance was a huge undertaking during the days where you tried running Quake while also having Windows 95. I got into Quake because of all the available MAP tools you could use with it, and the multiplayer aspect, which previously had been very difficult to get working without a LAN.

The detail that -wavonly (falling back to the older WinMM API instead of DirectSound) actually gave the highest frame rate is a perfect example of a lesson that keeps reappearing in systems programming: "more direct" doesn't always mean faster when you're CPU-bound. DirectSound's lower latency came at the cost of more CPU cycles that could otherwise go to rendering.

That's some of the same stuff that SDL is meant to abstract over, right? Although I guess SDL was more targeting Windows / Linux differences than Windows / Windows differences.