text in message window looks out of focus

I’m new to eM, using the desktop client on Windows 7. 

I can’t get the message window (received / sent) in focus, it looks grainy / fuzzy unless I zoom in, and then it’s too big to read the whole email.

I’ve tried playing with the plain text options and default text under >settings>mail, but it looks bad regardless of changing these

is there a way to fix this? 

Same problem here