Hi Henry, what are your settings under Options > View > Meshing parameters?

Do you notice any difference if you have those options set to Mesh angle:25 and unchecking "Add detail to inflections" ? Try modifying those with a blank scene, it looks like there may be a new bug in changing those settings while there are objects present.

I'll also e-mail you a link to the previous beta to see if that works better for you.

Thanks, - Michael