I think it's a Mac and an HDPI thing. I had to stop using emacs because it was too slow on my work MacBook Pro connected to a 4K screen. Scrolling was painful and only marginally better with nativecomp.
If you are interested in continuing to use emacs, I'd suggest using the profiler to investigate. There's a good demo/depiction of doing that here: https://www.murilopereira.com/how-to-open-a-file-in-emacs/ (posted recently to HN). I think it's most likely to be something pretty specific/small in the config you're using.
I am using emacs on a Mac, often with a 4K screen, and generally have no problems. I did have a scrolling lag issue a few months ago, but it was because of a bit of code that I had added to my modeline that was doing way too much work every time something changed in the buffer. The profiler pointed me right to it.
I am using emacs on a Mac, often with a 4K screen, and generally have no problems. I did have a scrolling lag issue a few months ago, but it was because of a bit of code that I had added to my modeline that was doing way too much work every time something changed in the buffer. The profiler pointed me right to it.