Got a i3 / 32 GB 2018 Mac mini three weeks ago. I don't do anything that demanding on it, just a few pieces of software, nothing much running in the background. I never really do anything that taxes CPU or GPU, no video or photo work. Everything is low level in activity monitor. I know this is very subjective, but it just feels sluggish and not snappy doing day to day stuff. Whether scrolling, typing, switching between apps, using the trackpad, swiping etc. Son is noticing it too (compared to his iMac). He describes it as 'laggy'. To compare, we got a 2014 rMBP (4 GB), 2015 rMBP (16 GB), 2015 rMB, 2017 MBA, and a 2018 27-inch iMac. All are nice and snappy and feel faster in day-to-day use. At the moment it doesn't feel like an upgrade -- any ideas? Kind of underwhelming. Crossed my mind it could be the driving the monitor that's doing it: 4K 28-inch Samsung. --- Post Merged, May 15, 2019 --- Just to add, I've got the 28-inch 4K scaled to maximum 'larger text' And I just read this on another thread: "I currently own a LG 27" 4k UK650 monitor and I'm wondering if by adding something like the gigabyte gaming box with RX 580 via thunderbolt 3 eGPU would help scale the LG UI to 1440 hiDPI without any lagging." I don't fully understand this, but does changing the scaling to 'larger text' make the UI more laggy, and that's what I'm experiencing?