Component tester kit (K8115)

My tester runs very very slowly.
From the moment the tester is turned on, it takes about 25 seconds to measure the item.

Please help me why it works so slowly

I’m noticing exactly the same effect. Measuring a 2.2µF capacitor takes about 30 seconds.
This is already a replacement kit and is also too slow.
There seems to be a fundamental problem.
Perhaps the ATmega 328 PU chip wasn’t programmed correctly.
Firmware Version: 1.12k

Can anyone help?