Thanks for your question.
The OOL (Optimized Optimum Online) could be possibly affecting your actual freezing and speed issues. You mentioned that you are using your SlingPlayer in your office.
If you are at work, multiple Internet users could be affecting the SlingPlayer viewing. One thing to check is the speed. This can be done by going to www.speedtest.net.
You can also, when at home on your Slingbox network, reconfigure your Slingbox on Setup on Slingbox.com.
With Kind Regards,
The Sling Media Team