Microseconds While Loop (Arduino and Labview)

Hello,

Currently I am controlling my Arduino code via NI Visa from Labview.

The issue is that the Labview will work randomly. I think this problem  might be that the delaymicroseconds in Arduino with the milliseconds in Labview. I read some other articles in the community regarding connecting my DAQ. I have the NI USB 6218 which has Timing resolution 50 ns.

My question is what should I read with the DAQ, when I dont need it for any measurements for this VI. Any suggestions?

Regards,
Alexis