Windows 10 Pro 1511
BDTS 2016 20.0.21.1191
Engine version: 7.63473
vsserv.exe memory usage only 223,548(K)
I have no idea what happened to all the memory usage I used to see with vsserv.exe.
I have noticed it has been dropping lately. However, this is the lowest I have ever seen it.
It used to be in the 310,000(K) to 450,000(K) range.
Not sure if this is as a result of the Windows 10 update to 1511 or not but I like it. 
Hopefully it continues