I got to RNO right before they downgraded from an 8 to a 5. The TRACON had just left when I got there. I saw 2 wash the 3 years I was there. One couldn't walk and chew bubble gum at the same time. But the other one the culture of the facility hurt him. I was happy he got another facility, went there and checked out. I heard the culture got even worse after I left RNO. Its a very easy tower to work. So even though I'm no longer there I believe a high washout rate would HAVE to be the culture. It DEFINITELY isn't the traffic. Its a VERY easy operation.