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Nrf connect 2.3.0 dfu a lot slower than nrf connect 2.2.1

Nrf connect 2.3.0 is at least 4 times slower than nrf connect 2.2.1 when updating a device ota.

Is this expected?

Anyone with the same results?

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  • I am able to reproduce the behavior with the SDK v12.1.0 bootloader, using one of the test images for DFU. 
    As you I cannot see any difference in connection interval(15ms) or the MTU size( 23)  when examining the logs, so then we're left with the number of packets per connection interval and/or possibly DLE, but thats not metioned in the log. 

    I will need to perform a sniffer trace to check this. Will keep you posted.

    nRF Connect v2.2.1 with SDK v12.1 Bootloader

    nRF Connect v2.3.0 with SDK v12.1 Bootloader

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  • I am able to reproduce the behavior with the SDK v12.1.0 bootloader, using one of the test images for DFU. 
    As you I cannot see any difference in connection interval(15ms) or the MTU size( 23)  when examining the logs, so then we're left with the number of packets per connection interval and/or possibly DLE, but thats not metioned in the log. 

    I will need to perform a sniffer trace to check this. Will keep you posted.

    nRF Connect v2.2.1 with SDK v12.1 Bootloader

    nRF Connect v2.3.0 with SDK v12.1 Bootloader

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