If you have LeadIQ set to save to Salesforce and SalesLoft and you see duplicates being created, you'll want to go into SalesLoft and do the following:
1. Navigate to the Salesforce Connector page and set "Linking People to Salesforce" to "Contact, Fallback to Lead".
2. Then set your Salesforce Sync settings as follows:
When it's set to check your CRM every 10 minutes, it ensures that there's plenty of time for entries to be created and visible in Salesforce by the time SalesLoft goes to check for them.