Wordpress Plugin Reduces Site Performance

Our website went from a 99+/- desktop score and 76+/- mobile score to a 54=/- desktop and 22=/- mobile score after integrating with Hubspot. This is simply put unacceptable! This needs to be fixed ASAP. I read through this thread and have seen that this has been ongoing for over 1 year. I really hope they take this seriously and fix this issue.