https://bugs.freedesktop.org/show_bug.cgi?id=101278
--- Comment #4 from Nicolai Hähnle nhaehnle@gmail.com --- Created attachment 131949 --> https://bugs.freedesktop.org/attachment.cgi?id=131949&action=edit Patch making the conditions even tighter
Odd. Maybe the game lies to you about tessellation being off? Anyway, could you please try the attached patch?