The only things I can think of is to verify that use Preload sounds setting, and also that the Latency setting is on Interactive.
You could try some random games from this list:
https://www.construct.net/en/forum/construct-3/your-construct-creations-9/c3-games-google-play-android-149983
(I've played CyberDuck from Artpunk, worked fine for me)
Confirmed the audio settings, the I also tried the CyberDuck game and omg I really bought absolute bottom end phone with the crappiest audio performance! When I press the jump button that cool looking duck is half way back down before the sound plays LoL!
I might have to spend a bit more to get a testing device :D Thanks very much for your input! Gonna visit Netonnet tomorrow.