I was expecting to see some improvements, so today I tested the www.fastpages.io on Page Speed, resulting in very poor results (all of them below 50 for mobile).
Also, I tested on lighthouse and got the following results:
US West - 59 out of 100
US East - 56 out of 100
Finland - 61 out of 100
Germany - 56 out of 100
Japan - 49 out of 100
Australia - 56 out of 100
Are you serious about speed? It's really important for SEO and advertising. I'm interested in the deal but can't trust that my page will be fast when your own page is not.
To quote from your description here in AppSumo:
"True to its name, FastPages lets you host landing pages with lightning-fast loading speeds to reduce bounce rates."