Firefox is faster than it was, but it's still the slowest browser. I've gotten literally 2x benchmark scores from Safari on the same hardware, and the subjective difference is large. Servo propelled FF from "unusable" to "worth the tradeoff" but they didn't have the resources to make it fast.
My experience in daily use of Firefox post-Servo is that all page loads have essentially been instantaneous. This is of course subjective based in part on hardware, so I'm not disputing your assessment.
As far as I'm aware, Servo is at the bleeding edge of performance under the hood. Its hybrid glyph rendering system for example is state-of-the-art.
I'm no browser architect--I don't know how the rendering engines compare, and of course it depends on the site and the extensions used. I did just time some popular websites, and confirmed my impressions. For example, nytimes.com gives
That was in private windows with no extensions. I tried it on my Windows machine with no extensions too, and it was 1.44 to 1.51, basically margin of error. I know MacOS Firefox has really lagged on performance improvements in the past. It could be a Mac-only issue.
