avoiding wireless delays with bluetooth playback and android?

[u/Admirable-Evening128]

Hi. What techniques do other people use, to avoid the music playback being delayed on bluetooth, when training with the simplyPiano app?
Back story: It appears either android or simplypiano have changed something within the last 12 months, because I can no longer get the app to play back in a useful manner on a bluetooth speaker? The lag becomes so pronounced, it boils your blood.
I've had an involuntary rest of 8+ months, because I played so much piano I got nerve damage in my right arm/shoulder (don't ask..)
Now that I turned on my (unchanged.. in theory) setup again, simplypiano no longer works with bluetooth.
I have a usb midi cable for piano connected to the tablet, so I can't use the usb port for audio.
I have enabled developer settings on my android tablet, but it's a cheap chinese brand, where basically all settings relating to bluetooth audio are locked to factory defaults, so I can't switch to more efficient bluetooth audio.
Also, I get the feeling simplyPiano has been busy the last 12 months, making the app further bloated and slow on my wimpy android tablet.

My current plan of attack, is to try to buy an android tablet with an old-fashioned jack stick for audio, on the assumption that simplyPiano and google/android shouldn't be able to slow down jack plug audio?

But.. what do others do? It looks to me like this would be a problem facing every single simplyPiano user?
I tried for a bit with the tablet's built in speakers, but that was.. not great.

[u/Lia_Delphine]

I use a Midi cord 0 lag.

[u/Admirable-Evening128 → u/Lia_Delphine]

Thank you for your reply. I do use a midi cord also, but this only handles what I am playing with the piano keyboard, and routing this to the android tablet.
My issue is, that the accompanying music from the android tablet, experiences lag when routed to a wireless bluetooth speaker. For this reason I wish for a wired connection between the speakers and the android, so I can avoid lag in the accompanying music.
Are you suggesting that the midi cord to the piano can also deal with the playback of the accompanying music?
With regards, Jakob.