There seems to be an issue with -li mode.
I have tested out -li 2 and -li 8 for alle cards (unmodded rx 480)
I get the same sol/s reporting rate when running with -i 6. But far lass power use. But in the pool I only get about half the sol/s when running with -li 2.
Could there be a reporting error when running low intensity mode?
yes , its a bug confirmed by Claymore.
See
https://bitcointalk.org/index.php?topic=1670733.msg17848866#msg17848866