MaxxECU DCT control detected an shift that took to long to complete according to allowed time settings.
DCT warnings found in DCT --> DCT settings, DCT Warnings.
Note: Please check your clutch slip to make sure you dont have an increase in calcualted clutch slip value when you increase engine power, a small increase like 1-2% clutch slip increase can result in "longer shiftings on full power" since the DCT TCU detects a clutch slipage, see DCT hardware. upgrade