A warning appears asking you to increase the connector update frequency:
There are a lot of updates for Company endpoint(s) hence syncing all objects to get the latest data. You can prevent this by increasing the connector update frequency.
If the number of updates reaches beyond the specified limit by Hubspot's API for the applicable endpoint, the connector needs to complete a full re-sync to make sure we are not losing any data.
To avoid this, the connector encounters a smaller number of updates if the frequency of the sync is increased.
This warning is a result of a Hubspot API limitation
Below is a snippet from Hubspot's documentation for the Company endpoint which enables the connector to get only the first 10,000 of the most recent updates.