On my machine, Firefox got 12.3, and Edge (Chromium) got 12.8. I don't believe that the performance characteristics of these two are that close unless I'm missing something. For example, audio players on Edge stutter a lot while Firefox plays them smoothly. An example is: https://deepsid.chordian.net/ I believe Edge is slower not because Chromium is slow, but because of Microsoft's overreaching efforts on energy cons…
Ran it in each browser one at a time while the music played in Chrome.
Chrome 122.0.6261.112: 21.3 +/- 0.64
Edge 122.0.2365.80: 20.1 +/- 0.78
Firefox 121.0.1: 18.5 +/- 0.75
Machine specs: Intel Core i9 12900k (24 core) / 64GB RAM / 3080Ti / Windows 11 Pro 23H2
After finishing the tests, I played that same song on Firefox and Edge. Both Firefox and Edge played it perfectly.
> audio players on Edge stutter a lot while Firefox plays them smoothly
I'm curious about what could be leading to this inconsistency as I use Web Audio for a number of projects, so I have a bit of a vested interest. It is notoriously easy to do WebAudio wrong or to do just a bit too much computation which leads to buffer underruns (pops). It also may have a lot to do with specific tracks on DeepSID, could you share some tracks that perform inconsistently for you?