I'm curious why text has a white tail when I'm scrolling in apps like Safari. I have an LG 4K monitor (27UD58) and I'm using it in 2560x1440 resolution. I didn't notice this when using the rMBP screen but I do on the LG screen. The scrolling is not choppy in most cases but it's like the text or even images don't move as fast as the pages scrolls. Anyone know what or why that is happening?