My experience with Google PageSpeed Insights has been quite frustrating due to the numerous alerts I'm receiving about Unsupported CSS Properties.
The importance of avoiding non-composited animations: Animations that are not composited can appear glitchy and contribute to Cumulative Layout Shift (CLS).
List of unsupported CSS properties includes: font-weight, color, margin-right, font-size, background-position-y, background-position-x, margin-bottom, and many more...
To see a visual representation of these alerts, check out this screenshot: Screenshot of the Alerts