Sorry if this has been answered before:

Can you control the frequency individually, I have three of them and my middle one doesn't like it when I go to 200.
The other two hash away like nothing but the middle one drops incredibly low and then dies.

I'm using:

cgminer -o stratum+tcp://us-east.stratum.slushpool.com:3333 -u MY_USERNAME --gekko-2pac-freq 150

Thanks