WinXp x64
HD 6970
Was getting 420 Mh/s, but with the new version, I can't get over 405 Mh/s.
command line used:
WORKSIZE=128 BFI_INT AGGRESSION=11 VECTORS
What do I need to change to get back the missing speed?
Are you sure that you were actually getting that speed? Meaning, were you producing more stales? Phoenix was rumored to be showing artificially high hash rates, although I cannot confirm this personally.
EDIT: Add FASTLOOP=false
Fastloop is on by default and while it is not supposed to affect higher aggression levels like it used to, it is better safe than sorry.