The W1 reconciliation relies on the setup of the payment application rules. Based on the rules the confidence will be set to High, Medium, low or None.
When using the default application rules it can happen that applying is not accurate and therefore a user must review more then required.
Our recommendations is to start with the default and delete the lines with the match confidence low with priority 4 and 5.
Why not working with Priority 4 and 5: Because this is too uncertain to match with the transactions and it will cause additional manual correction because of matching proposal with wrong confidence.