No, that is not acceptable quality for my viewer... I'm currently compiling a new release and pulled off v1.26.20.9 in the mean time.
For the techies among the readers, using TRIANGLE_STRIP to get rid of QUADS was a bad idea (not mine, but I still did not detect the problem in time): strips don't batch together nicely unless you can restart the primitive between strips (but only some OpenGL versions or brand can do it), meaning you end up having to flush the GL buffer to avoid seeing one strip connected to the next when it should not... For today's release I converted some time-critical TRIANGLE_STRIPs to TRIANGLES, and flush the GL buffer each time a new strip is to be drawn for the rest... Next week's release will see all TRIANGLE_STRIPs converted to TRIANGLES, for added speed.