It doesn’t matter if it’s a CRW or not. For some people CRW might work better, for others it doesn’t. In my main region we are matched with 2 Japanese servers and another halfway dead european server.
There is a huge time difference between EU and Japan. When it’s main time here, even the hardcore japanese players are mostly in bed. And vice versa. Also these regions are full with whales, so it’s pretty rough. ^^
In some regions I can finish 100k in a matter of hours, in others I won’t get anywhere near that while staring at my phone all weekend. So I can understand both kind of players - those who want higher and those who want lower rewards. But with all these different settings, there is no way you’ll find a solution that will please everybody. Region merges could help though.