How to get more Google reviews without breaking Google’s policy
Most of the gap between businesses that get reviews and those that do not is timing and friction, not persuasion.
A widget that appears after paint pushes content down, and that shift is measured. Reserving the container height solves most of it.
LCP only if the widget is the largest element above the fold. INP if the script blocks the main thread — a loading question, not a size one.
A page with an unoptimised hero image and four tracking scripts has poor vitals regardless. Run it with and without the widget; it takes two minutes.
Synthetic scores are for diagnosis. Field data in Search Console is what counts.
The full write-up is in review widgets and page speed.