"Fatigue" System in PWI version?

Hello, how's everyone doing today? Get yourself comfy and take a minute or 2 to allow me to introduce a little information I thought I should share with my fellow gamers.
First let start with a little background information that I happen to find out while browsing the web. If there's any doubt in the information, you guys can alway googles and see for yourself. Anyway, China, Korea, and possibly many more country are conducting research regarding effects of MMOG on their populations, economy, etc. They are terrified at the results that these research agencies concludes. To shorten the detail, issues such as heavy online gaming result in low productivity and no real life jobs earning. They estimated over 55m young citizens (don't remember the age range 22+/-10) are heavily addicted to MMOG and 80 percent of them pay some form of subscriptions to MMOGs and have no source of real life income. In respond to these negative effects on their citizens and the economy, China and Korea start applying heavy censorship regulations, limited hours in game and to some extend ban late night gaming(Korea). Beside the regulation mention above, they also force game maker into applying what we call a "Fatigue" system into MMOGs. You can google a little bit about it if you don't know what it is. Basically, it's a method that keep peoples from spending too much time in a game where farming (run instances over and over for [item] drops) is a way to advance/strengthen character by reducing drops if players is too active such as logged in too long and too often. This fatigue system may or may not hidden from players' awareness. b:shocked
Ok, enough information. Let us discuss. Since this game came from China, do you guys think this system is active on PWI version? From my personal farming experience, drops seem diminish the more I runs do. Sometime coming home from school, run one TT run and I get 2-3 gold mats, and sometime on weekend, I do 18+ runs of the same TT instance and get 2-4 gold mats total b:surrender . Off course we can all do Nirvana runs where drops is pretty much fixed. Well that's me, how about you guys?