The character selection screen is fairly graphics intensive, with objects, some water with reflections, and some mist, more stuff than many dungeon corridors, but less than some complex public areas where FPS doesn't matter. Absent a "Hall of FPS" for testing graphics options for those who can't run with everything maxed-out, the selection screen might be a reasonable substitution. It'd get you in the ballpark at least. If you're getting low FPS there, you probably really should knock the settings down, and if it's max there, you can probably bump it up some. If the selection screen could have both a FPS meter and a little bit of everything graphical for options tweaking, that'd be even better.