Font smoothing settings doesn't consistently work for every login on Windows 2008 R2 when using a RDP client

I'm trying to use the MSTSC client on a Windows 8.1 machine to connect to a Windows 2008 R2 server. In the MSTSC experience tab I checked the font smoothing option. Font smoothing works some times and doesn't work the other times. I don't see a pattern here.

any kind of help is much appreciated.

Thanks,

Prasanna