Hi,
Core Web Vitals are metrics to help you otpimize your site. The metrics may show an improvement, but in my opinion introducing a 3rd party asset to fix something, that may not be noticable to the end user, and only the number in the metrics changes is redundant.
Definitely try it though, I might be wrong and it may actually introduce some visual improvement as well, unfortunately there are a lot of thing I don’t know yet.