As a prelude, yes, I am preloading my sounds.
I'm dropping some SFX into my current project, and damn, chrome mobile lags terribly. I'd guess it's around 0.5 seconds before a sound actually plays. And yes, that's every time, not just the first.
Weirdly, firefox mobile drops frames visually, but there is very little delay in triggering sound effects.
Is crosswalk like this too? I haven't tried a crosswalk export with sound yet...now I'm getting worried.