I’ve noticed this recently after having my laptop plugged in, then taking it on the road and trying to access internet while just using battery.

Page loading times while plugged in are instant, however when not plugged in, I find they take VERY long to load, if at all.  I’m guessing this has something to do with the lack of AC power and the processor being slowed down to reduce power, but this seems rather excessive. 

Has anyone else experienced this?

That’s not my experience. It has to be something else.

Well, I base this on a webpage taking very long to load - plugging the computer in and it finishing instantly.

If this is indeed the issue, then I suppose I could adjust the power settings, but it seems silly to have to do that just to be able to use the internet at reasonable speeds…