Why Is My Sync Taking Too Long After Adding a New Table?link
Why is the Salesforce connector taking a long time to sync following the addition of a new table?
We sync the historical data for any newly-added table. If the volume of data is large in the new table, then syncing the historical data may be the reason for an increase in your sync time.
Once the tables complete its historical sync, the connector likely regains its initial sync speed, though with a potential increase due to the addition of the new table.