What is the cause of mobile Goolgle Page speed tanking from 80 to 65?

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1

My mobile score was 80 a few days ago, made some optimizations per GT Metrix which is now a 93%, but now my Google Page Speed Mobile is now 65.

I basicially wnat to launch this with base mobile 80%.

Why did Mobile score tank?

Desktop Score

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Mobile Score
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(upload://mb5rdzcDLAns2MnOKXHPrGMNrPJ.png)

GTMETRIX

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https://preview.webflow.com/preview/deepdiv-iteration-v3?utm_medium=preview_link&utm_source=dashboard&utm_content=deepdiv-iteration-v3&preview=6edc520bc283dc73051bcda87ae58b08&mode=preview

2

GTMetrix is using Lighthouse 6.3 while current versions of chrome are on Lighthouse 7. You can look into the differences. If you need consulting on optimization post to the freelance category.