My results were the same as @Hermosa69. Safari is a laggard - no matter what the setting.
On Firefox & Chrome a "click~tap" is a hair slower than "mouseDown" - which is what I would expect - business as usual.
This situation also highlights the time wasters when coding - there are all these exceptions... things that should work but they don't... is it the code or something in the "black box". Usually it is the code writer ;-> Reading this forum has been immensely helpful for these types of situations. My goodness it is a simple click to play and Safari boots it (and the sound is preloaded).