Alex_V_King's comments

I've had some bad experiences scrolling through super high-resolution scanned PDF documents. Those cause beachballing for several seconds in between each page. However, this seems to be a known issue in Preview, and it happens on other, more powerful Macs. I haven't tried with a more optimized PDF reader.

Otherwise, if you have a very busy webpage with a lot going on, (and ads going), scrolling might not be entirely smooth.

Hi, I typically run my MacBook connected to a 1200p monitor, and it behaves great. I've run all sorts of video content on the computer, up to 4K, and it plays it fine. Scrolling is smooth, though occasionally it'll hiccup here or there. Generally, I'm quite impressed with the performance. My review on the website goes into some more detail about day to day usage, if you're curious.

It's a little thing, but Cmd+Shift+3 is actually the shortcut to send a screenshot of the entire screen to the desktop. Cmd+Shift+4 is great for selecting a region.