Facebook seems to lag my whole pc, that might be facebook's fault, but it doesn't happen in chrome.

I browse reddit quite a lot, images just seem to render slower (and the render all distorted until finished).

Youtube videos seem to go out of focus constantly.

Cold start is quite slow, though not unacceptable times, definitely slower.

When I load a big page, it seems to take much longer before I can start scrolling.

None of this are actually tested, so some may be perception, but in general terms, it actually feels quite slower, not bad, but not snappy.