Too high memory usage from termsvcs and wsmprovhost

Hi everyone!

I've got Windows server 2012r2 running in VM on Hyper-V 2012r2. 

a few days ago I mentioned that some why it usess ~8Gb Ram for 70 user sessions.

I started looking for problem and found out that svchost -k termsvcs uses 1.5Gb RAM and 5-6%CPU. Also many "wsmprovhost" processes use ~70mb for each user.

svchost usage:

https://www.dropbox.com/s/szvn7ey1lk38a95/ts5.png?dl=0

connected users:

https://www.dropbox.com/s/jnijnlipk7g88be/ts4.png?dl=0

According to task manager:

http://i.shotnes.com/gVb8vSf8

each user uses from 132mb to 56mb RAM, it's 94Mb in the middle. 94Mb* 32 users = 3008Mb

But overall usage is:

http://i.shotnes.com/eQb8vRX1

Why?