Hi Paolo,
Do you really need to use Workflow?
1-if yes, you should do some adjusts in WF module
Rules (depends of your scenario):
WS74300006 FCLM_CASHMGR
WS74300007 FCLM_CASHOPER
WS74300008 FCLM_CASHSYSCOLL
2-if not, Could you stop work with WF (disabling WF)
I hope this suggest can help you
best regards
Adnan