Out of interest, when you say you implemented tracking in a different way, do you mean you installed the tracking code directly (or via a tag manager) rather than via the Wordpress plugin? Or that you removed the tracking code entirely and replicated some of its functionality with the Hubspot API?
We have the tracking code installed via Google Tag Manager and are still getting Hubspot-related core web vital errors. I’m working with HS support to find some options, but none seem to be especially viable.