[rules-users] Upgrade to Drools 5 - loss of performance

[Scott Reed]

I just upgraded our app from Drools 4 to 5 libraries. We just use the 
rules engine with DRL. The performance of the engine on our rulebase is 
unacceptably slow.  I assume there is something we need to do to our 
rules or the way we are configuring the engine to fix this. I don't see 
anything in the release notes about backwards compatibility issues. I 
would very much appreciate it if someone would direct me to any 
documentation that explains what needs to be done so our 4.0 rules 
perform at least as well as they did before the upgrade?
Thanks,
  Scott