so corn, i looked at the demo for you round, heres some things ive found, like mine your round is too open
here are a few problem areas i saw
there wasn't any huge issues with this, but the open area just strikes me as a bit odd...
this was the biggest problem, even though there are little areas off to the side you can hide in, this wide open corridor is hell for anyone trying to avoid a sniper and really kills the fps. I would advise something large and solid to block it off a bit, preferably from the left side, something that would make it less open, and possibly making those side routes the only choice in some places.
I just happen to think this would look better if you extended the walkway outwards a bit, doesn't need to be as far as i doodled, its just that right now the random drop-off looks odd.