Different lcs encode speed between nrf5340_dk kit and my board [NCS2.9.0]

[tourists]

I used nrf5340 on my board and did some changes based on audio demo.

Unfortunate,I heard a noise after set configure like bis gateway, audio input from usb ,48k 16bit 2channel,...

Compared to the same cfg on nrf5340_dk, the log  "USB RX overrun" is  on my board.

Now, the time lc3 encoder used to encode 2 channel is more than 10ms on my board, but nrf5340_dk kit only use less than 6.3ms.

I checked these two boards that have the same SystemCoreClock and speed of handling floating-point numbers.

And i try to turn off irq and k_sched_lock() on my board, but  the encode time more than 7.7ms and get some err.

Can you provide me with some guidance?

Thanks!

[Øyvind]

Hello, 

Could you please provide a diff file showing what changes you have done on your board vs the nRF5340DK? Are you able to share more information on your board? When you write nRF5340DK, are you referring to the Audio DK? 

Kind regards,
Øyvind