OBD2 Bluetooth update rate is extremely slow.

evoqoo

My car is a 2025 Volkswagen Golf 8.5R. I've tried two OBD2 Bluetooth devices, Carista and Vgate iCar Pro, only for displaying the tachometer. The update rate is only around 0.1Hz, which is extremely slow. However, the tachometer update rate displayed in the Car Scanner app is quite normal.

What could be the reason for this? Thanks!

aol

evoqoo Did you enable all channels for logging? They share bandwidth. Otherwise no idea why it would be slow.

evoqoo

I only recorded Engine RPM and Throttle position, and later I even only selected Engine RPM.
The upper right corner always showed 0.1-0.2Hz.