Revert "Adjust average rate in set stats properly"

This reverts commit 165075dd01e41f4c9abf434623cd9903ece5f945.

This commit causes other scheduling problems
Revert "Fix level stats on incorrect item"

This reverts commit a7c1790bcc4eb4ae19fb3378d861f9e69454374d.

This fix probably causes other scheduling problems