All curves in Illustrator 25.0 have rough edges

[stepheng60151102]

For some reason, after moving to Illustrator 25.0, all the arcs, circles, curves etc are now made of lines that have distorted, pixellated edges.  This is not an anti-aliasing effect - they are irregular bits of white crap in my nice black lines.

Squares or straight lines do not do it. Please see attached file.  I have tried setting the brush to basic. In the last version of Illustrator, these were all fine, but something has changed in the upgrade.  Help!

[Monika Gause · Accepted solution]

Does it help when you select View > Preview on CPU?

[Bill Silbert · Accepted solution]

Try turning off GPU Performance in Illustrator Preferences.