Everything inbetween will lead to blurry text/assets and decreased performance since the output as a whole will be scaled and downsampled by the GPU. I run 2 2

Everything inbetween will lead to blurry text/assets and decreased performance since the output as a whole will be scaled and downsampled by the GPU. I run 2 27" 4k displays off a MacBook with integrated graphics, both scaled at 1.5x to "look like" 2560x1440. It works fine; text is not quite as sharp at it would be at 2x, but it's far better than it would be on an actual 1440p display. I haven't noticed decreased performance, but I'm not doing heavy graphics work. Agreed that display manufacturers are messing this up. 4k displays should be either 20-24" for 2x scaling or 40+ inches for unscaled; 27" displays should be 5k.