Increase rate of frequency measurement

Hello,

I'm new to Labview. I'm trying to measure the speed of a motor using a rotary encoder coupled to the shaft.

There I use DAQ Assistant to acquire counter input which gives me the frequency of rotation. Then I just multiply 60 to get the speed. That's fine and works well.

But, when I save the data using write to measurement, I get only 4-5 samples per second. Whereas, I need at least 300-400 samples per second. Even if I run from the DAQ Assistant setup I can see that the update rate is very slow.

I'm using a 9401 in slot 5 on a cDAQ-9188 chassis. I have attached figures of my configuration.

My deadlines are closing in, any help is appreciated.