I just purchased a new 43" 4k tv that i use as my monitor for my pc, and having 2 issues. The major problem is the frame rate/stutter, about once a second the game will will skip a beat so to speak, but just the graphics, the audio is fine. And oddly enough, it's not as bad when i'm in the vab/sph, just everywhere else. I tried one of my saved ships, 100ish parts, and made one just for a test that was 5 stock parts and no difference. maybe change the frame rate in the game settings to 60 from 120? already have the graphics settings in the game turned all the way down. Didn't have this issue when i was using a 43" 1080p tv as a monitor unless the part count got too out of hand, and even then it wasn't choppy, just slow. Not running a LOT of mods either, 44 I think, and aside from Outer Planets Mod and its dependencies, most are just parts/propulsion from mods like kw, b9, kspi, near future, etc.
The other issue, is of course the font size when in map mode and some menus. Text is literally 1-2 millimeters tall, i've lowered the screen resolution from 4k to 1080p, increased the scaling, all that stuff and nothing is working. And even if the text did get big enough to read, the mouse pointer is so huge, maybe 2cm^2, it would cover it all up anyway.
If you need more info, let me know. Thanks.
Game versions 1.2.2, 1.3, 1.3.1
PC specs:
stock Acer Aspire
Windows 10 64bit
7th gen Intel Core i3 7100 @ 3.9ghz
Intel HD graphics 630 (upgrading to a gtx 1050 2gb card)
1TB HD
8GB DDR4