Planar anomaly on arcs ?

 From:  bemfarmer
10723.4 In reply to 10723.1 
Hi svenster,

Options > View > MeshAngle reduced from say 10 to 1, will show much less of the artifact, but
mesh angle of 1 may result in "slower" (?) display.

Normally for a balance of speed vs artifacts, mesh angle setting should be ~ 10 ?

Just an opinion :-)
- Brian