I personally dont notice any visible pixels, but I dont own any 4K monitor, so maybe Im just used to FHD screens so it dont bother me at all. Also Im using this screen only for racing as its mounted in rig and not for anything else. As this is 144Hz display its of course best to have 144+ fps in game for best results, which is unfortunately not easy to get in this resolution. Currently on my 980Ti I have around 70-90fps in a full grid Online race. Its not ideal and I can notice that its not very smooth, mainly when I do some sharp corners so there is a lot of movement on display fps drops little bit. But I dont want to set the graphics to the lowest and have ugly looking game just to have +10fps. I believe with 1080Ti you get decent fps not to have any of these problems. 2080Ti is about 30-40% more powerfull than 1080Ti, but the price is just crazy. Also if RaceRoom will switch to modern engine in future, its hard to tell how many fps we get then. For me 3840 x 1080p and 1080Ti is the best combo in terms of value/performance now.