We experienced a 3x increase in time spent on our test suite.
It used to be ~8min, but after upgrading Drools to 8.31.0 it went up to 24+ min.

Some rough numbers:

• ~1700 rules
• rules are using the executable mode (DSL, PatternDSL and no DRLs)
• we also use OptaPlanner but with Bavet instead of Drools for score calculation, so I'd assume that's not related, but I can't be sure