Here's my screen settings in Windows 10 (they actually recommend enlarging by 300%

(Apologies for the Swedish. It says Scale & layout; Change the size for text, apps and other objects; Screen resolution; (recommended).)
Under advanced settings, the "Let Windows try to fix apps so they're not blurry" setting is On. I've tried toggling this with no difference in the screenshot department.
Graphics card is an NVIDIA GeForce GTX 1050
I think that's all the possibly relevant information, but just ask if you need more info.
In-game screenshots work flawlessly on 0.4.
This isn't a top priority issue by any means for me personally, just thought it could be interesting and could be affecting other people as well.