The lr1121 looks to spend up to 3 times longer (Busy is high) processing the same/similar SPI commands compared to the sx1276/sx1280 e.g. when running a string of command such as get IRQ, read buffer, get rssi, clear IRQ.
This may be a dumb question, but is it possible speed up the processing by swapping out the 32MHz XO for something like the 52MHz XO used on the sx1280? Is there even a register to correct for such a change???