Sorry to say this but I extremely hate when I had to prove my mod is working.
Left = normal speed, right = faster speed (2x) - Both 20 seconds gameplay for comparison
Spend some effort to observe and you can see my digimon hit faster and enemy swinging motion is also obviously faster.
This was tested on Mumu12 and S26.
I added x5 speed in the latest apk, good luck in speed running account ban or whatever, don't ping me about this matter again.