On Fri, Apr 23, 2021 at 03:47:28AM +0200, Ansuel Smith wrote: > The original code had the internal dalay set to 1 for tx and 2 for rx. Do you have any idea what these values mean, in terms of pS? What value is being passed to the PHY? Since the MAC is providing the delays, you need to ensure the PHY is not adding a delay. Is there code doing this? Andrew