POLITE VERSION
No guarantees, but reviewing and trying the following might (or might not) help.
scrivener.tenderapp.com/help/kb … -in-editor
scrivener.tenderapp.com/help/kb … i-displays
scrivener.tenderapp.com/help/kb … y-settings
You might also search the forums (search field in upper right corner) on “jagg*” or “jagged”.
And you might directly contact tech support as discussed here
literatureandlatte.com/support.php#section-email
LESS POLITE VERSION (Scrivener not automatically the villian)…
Hmmm. Your experience is not necessarily that of all, or even many, others…
On my Windows 10 PC with an Nvidia Geforce 960 display card, I put Scrivener 1.9.6.0 side by side with Word 2010 (the latest I have), pasted the same lorem ipsum boilerplate text into both, assigned different fonts to different paragraphs, adjusted the zooms on the apps so that onscreen text size matched (Scriver 130%, Word 100%), and examined the results at both HD (1920x1080) and 4K (3840x2160) resolutions. Fonts used (all size 12) were Courier New, Times New Roman, Garamond, Calibri, Lucida Bright.
And…
Little or no difference between the text in the two apps. In an earlier attempt, I had found one font (sorry don’t remember which) that looked markedly worse in Scrivener and a couple (again, sorry don’t remember) that looked somewhat worse in Word.
Turning Windows’ ClearType off had little or no effect on Scrivener (1.9.6.0, perhaps would differ for earlier versions), but did tend to worsen the fonts in Word.
That was on a 50 inch 4K TV/monitor, driven over an HDMI 2 cable by a Nvidia Geforce 960 display card at 1920x1080 and 3840x2160 resolutions in PC mode… results might or might not vary on a different display card/chip, different or physically smaller display, laptop, display driver, etc.
Which points up that the issue being reported might possibly be due to Scrivener… but might just as likely be due to the PC/Windows hardware/software environment that Scrivener finds itself running on. As for example, the display card/chip, display drivers, display monitor, display settings, fonts used, source and quality of those fonts, …
Windows is supposed to handle and largely hide such environmental differences, but doesn’t always succeed.
Given that, a little less anger, leap to judgement, certainty, and “authority” might be helpful.
You were robbed? Huh. Despite having had the opportunity to try it out for something like 30 or so days (don’t have to be consecutive) for free, before purchasing?
“something that every other application has been able to do over the past 10-15 years”? Cough. No. Bull.
Good luck.