That's subjective unless your testing clean browser for each using verified test software to get correct test comparisons.

That's just double talk. I use Firefox to open a site. It's slow. I try Edge it's faster. I try Google It's faster. That's what counts right here on my computer. I don't need fancy software to test that. The results speak for themselves.

I thought I would get an answer with a possible solution. Maybe one of your ad-ons or something.

Well, I'm switching back to Edge and Google.