That is an idea. I would expect it to happen at speed too, but its behaviour might alter.Sounds like feuling issue, or misfire at idle.. There are any things to check.. firstly try a battery disconnect for a mcu reset. Check battery health. Check troubleshooting misfire at idle in workshop manual.. the list is too long for me to dictate here..
Actually the priming hap ok as ai hear it,A defective (not faulty) oxygen sensor could also cause this.. if you have 2016/2017 lubricate the on/off starter switch.. they are rubbish, my earlier model twin had bad connection & would sometimes not prime pump & start..
dct was reset by the dealer 10 days ago or so. Can’t beleive the dealer can’t solve it. What year is yours?If it were my single cylinder CRF I'd say it is the auto decompressor kicking in at low RPM. I don't think the twin has that so perhaps the timing chain slapping around a bit as the engine is struggling to run?
FWIW my bike started to do this along with a crappy launch when cold, It actually stalled for the first time in 15K. DCT reset cured it.
Just wondering if this is specific to the 16-17 editions,,,,