I am currently away from my external monitors (so have just the eGPU and internal monitor). While I have not had scrolling issues, I do agree that with Mojave, some animations sometimes tend to lag/drop frames. I'm gonna get a T5 by samsung next month Thank you for elaborating. This is all I wanna know and I will be grateful.I was thinking of making a screen capture edit to showcase the scrolling problem but unfortunately I am very low on SSD space right know,and the quicktime recordings take alot of it. Can you please just open Safari/Chrome with the eGPU plugged in and open activity monitor and then press command + 4 to open GPU history and try a couple of scrolls with a trackpad to see if the browser is using the eGPU for scrolling? It will take you 2 minutes. It happens both on mine MBP and on the store units. In summary -On safari it is a butter,but sometimes skips a frame or 2,on chrome it is much more pronounced. Many people on the internet are telling me that they don't have problems ,but they simply have not be looking for them.

I know that it sounds crazy for just a little improvement in scrolling ,but when you add to that that maybe I can make it work in bootcamp to game, when I play 4k youtube the fans wont kick in and also the added benefit in Final Cut it is starting to make sense. I can invest in something like razercore X AND VEGA 56. It bugs me alot ! I've payed such a premium for this laptop and I expect it to be flawless. On the 5k iMac store units the scrolling is absolutely flawless ,so I was thinking that maybe an eGPU can solve this problem. I've tested the store units and they also tend to skip some frames sometimes. It's mostly buttery smooth in Safari ,but in Chrome it's really bad. Out of 10 scrolling animation are buttery smooth ,but the other 2 have skipped frames.

Firefox for mac os mojave