It may be interesting to recall that collabora did port the linux professional JACK audio server to Android and it has far less latency than audioflinger (btw in french audioflinger phonetically mean to destroy the audio (quality), which is kinda appropriate).

Sadly no OEM ever cared to my knowledge to integrate this work in their ROMs. I also openened an issue on the android bugtracker to feature request replacing audioflinger with alsa/pulseaudio. They never answered nor closed the issue but I haven't checked since 2 years.

Edit: here is the android feature request https://issuetracker.google.com/issues/37073168 Maybe if you comment/upvote it it may gain traction.

Digression: If you are interested in audio latency, I recall that Firefox has better webaudio performance than Chrome.