Audio Dropouts inside Cubase ONLY on MacOS

I have installed TOOLS for MR V1.7.8 for Mac OS X and setup MR bed on the manual.

MR played back songs from ITuens flawlessly. However, when I am inside cubase, it hear audio dropout even if my project has a single audio track.

I have followed Mac OS X Tuning Tips for Audio Processing.

Basically my computer is solely connected to USB ( elicenser) and FireWire cable.

I have spent hours to fix this. I hope we can fix it so I can start my music project ASAP.

I have uploaded the allowed 3 screenshots here. I will upload them after posting this.
Thank you very much.
Screen Shot 2017-05-23 at 9.35.19 AM.png

Im guessing your Mac cant handle all that streaming inside Cubase. Your drive is only 5400RPM BTW, should be a 7200RPM drive. I would put those big libraries on an external HD and stream them from that