Yes.  All clients use different names.  When I used VDIFF_TARGET=5  I got the correct share/min, but after it goes into checking client diff it re-evaluates and diff goes up to 1k+ then down to 300.  The variable diff does not work too well for me.

I set POOL_TARGET=600 and disabled the variable diff functionality.  Works ok now.  Might need to hack the diff for each client during subscription once I get clients with different hashing rates.

With 600 I get mini rig going at ~11 shares/min.