I have the same issue. In my case, I use a 28" 4K – 3840×2160 – monitor I normally run at 150% scaling (that is, simulating the workspace a 2560×1440 resolution would normally give at 100%). Size is just about right for me, but the fact that Cakewalk is DPI unaware is bothering me a bit, since it looks particularly blurry on my screen. My other PC, a Surface Pro 8 running at 2880×1920 with 200% scaling (1440×960 workspace), actually looks fine, since the pixelation doesn't bother me at that size and 200% gives me no blur, but I'd still like a crisper look. I came here looking for answers, but I guess this has been an issue for a long time with no solution in sight.
I have the same issue. In my case, I use a 28" 4K – 3840×2160 – monitor I normally run at 150% scaling (that is, simulating the workspace a 2560×1440 resolution would normally give at 100%). Size is just about right for me, but the fact that Cakewalk is DPI unaware is bothering me a bit, since it looks particularly blurry on my screen. My other PC, a Surface Pro 8 running at 2880×1920 with 200% scaling (1440×960 workspace), actually looks fine, since the pixelation doesn't bother me at that size and 200% gives me no blur, but I'd still like a crisper look. I came here looking for answers, but I guess this has been an issue for a long time with no solution in sight.