Hi @GrahamCox, thanks, well I do not have a timeline yet, we are investigating why the style which was changed in the designer is still having a style with open sans being used.
One thing I can tell you though, is that even once this is fixed, this will buy you a small performance boost, but the majority of the issues with the site load time is not due to the fonts, those are pretty small anyway and take up only a small percentage of the requests on the page.
In my testing, I was able to get the site down from 101 to 39 requests and that is including the font variants which are being downloaded.
The site speed without the custom code and the quicksand fonts loaded:
Came out to a page load of 882ms, but that varied in my tests from 662ms to 1.2s depending on from what region in the world you are in:
Without the custom code, there was also passing grade on performance insights:
Again, that test included those open sans font downloads.
Now when I test on the actual published site, the results are far different with the custom code, the number of requests are high and there is script that could be optimized as shown in performance insights:
Performance Insights on the published site:
It does not appear that any of those scripts are being loaded from Webflow.
Once we help resolve the issue why the Open Sans font cannot be removed from the site, that will help reduce total requests by 11 and will reduce page download by 180k, so you can expect about a 10% performance improvement once the font issue is resolved.
Let me know if any questions, I am here to help.