On a new, vanilla LyX installation (version 2.2.0-1), all the 'Help' documents (Introduction, Tutorial, etc.) are displayed with very large fonts. However, if I zoom to correct this ('alt -' on my system), the quality of the font degrades badly. Going in the other direction does NOT effect the quality.
I've tried changing various fonts (using Tools -> Preferences -> Look & Feel -> Screen Fonts) and get the same effect for all the fonts I've tried. I also note that in the preferences, the default zoom is 150%, which seems odd. I wonder if the problem has to do with the font's being used. I've looked through the LyX documentation, but it's not clear how to use non-bitmapped fonts in Tools->Preferences-> ... -> Screen Fonts. I haven't found any reference to this problem in the LyX documentation, LyX mailing lists, or anywhere else FYI I'm running on Arch Linux. I tried installing texlive. That had no apparent effect, although I it's not clear whether LyX detects it automatically, of if I have to do something. I'd appreciate any thoughts on how to fix this. I really can't proceed to learn and use LyX if I can't fix this. Thanks