I have the same problem with my Helix LT.
I have an Macbook Pro 15" (Mid2012) the connection drops every couple of minutes. I believe it is more of an issue when trying to connect using USB3.0 and 3.1(A-type)
Nothing can make it work, I've tried different USB ports, different USB cables, different OS (ElCapitan, Sierra, High Sierra).
On the other hand the connection works like a charm in both my macmini and macbook air, go figure.