This is mind boggling! Judging by your stuff it should run smoothly.
do you get any feedback from the cpu and ram meter in the transport panel, does it lit up?
Do you have any other applications like wavelab etc and do they work as expected?
Are the dropouts momentarily?
First of all, I am no expert, but judging by your system it’s not a driver issue or system failure.
Seems like something is conflicting. What happens if you switch (just to experiment) to the onboard
soundcard (if there is one) with the full duplex driver?
Greetz Dylan.