Creepy Hospital: Mental Ray Being Mental

Messed around with Mental Ray and lighting.. I like the realistic options it has but rendering really sucks. It applys a stupid filter which I can't turn off and makes my output all splotchy, ugh. Gonna try my lighting with Maya software render instead. Here's some screens of Mental Ray renders, which I had to sharpen a bit in Photoshop cause the originals are kinda blurry.