I just check this out.
On a family with 15 children the FGS was displayed in less than 5 seconds.
This is on a Windows 7, 64 Bit, 8 GB RAM. FTM version 188.8.131.523
Where did you get the ".9" in your version.
I think you have issues with your machine, which could include your AV, Firewall or any other "Protection" settings.