Hi everyone, I got a large iTunes library (around 3500 tracks) and when I scroll in album view the scrolling is very sluggish! When I click on an album it gets even worse. For testing I reduced screen resolution to 1280x720 px and suddenly lag was gone. Therefore this issue should be caused by a lack of gpu optimization. I had this issue already on Sierra and now on High Sierra Beta it is still there. Have a look at these videos, I recorded them to show this issue: https://www.dropbox.com/s/vfxok90581fxche/5k_2.mov?dl=0 https://www.dropbox.com/s/2o9jeldainhgak9/1280x720.mov?dl=0 I think this issue could be widely known, but apparently still nobody has mentioned it relating to the latest iMac generation. I find this fact pretty shocking, because Apple isn't capable of offering a smooth performance in iTunes, although the latest iMac generation got a massive GPU Upgrade. So I wanted to start a thread to discuss this issue or find a fix/workaround. It really upsets me and I have to talk about it. Btw, I have the Radeon 580 Pro.