Default for me is sufficient. I browse web, write documents and edit 4K video in Final Cut Pro using full screen mode for most apps. No lag.
QuickResWhat software is everyone using for custom resolutions that are outside of Apple's available options?
SwitchResXWhat software is everyone using for custom resolutions that are outside of Apple's available options?
I keep trying 1440, but I can't seem to get use to the small amount of lag I notice. I wish it weren't the case as I love the more space, but the lag bugs me.
After this thread, I've actually gone back to 1280x800 and it does seem a little smoother than before