@sivan: Thanks and yes, the water scene above runs at more than 330fps. @Rackscha: Yes, exactly, and there are many other issues and restrictions, too. It's rather a technique to enhance certain effects in a more or less subtle way, one should not put all focus on the reflection, otherwise all the limitations will become easily noticeable.
Two more shots, first one with normal mapping, second shot would normally require two additional views:
"Falls das Resultat nicht einfach nur dermassen gut aussieht, sollten Sie nochmal von vorn anfangen..." - Manual
