Thank you all for the help.
I currently use Charter Cable Internet with the charter modem. I do use the wireless network in the house for other devices but the roku is wired. How would I go about identifying a wireless conflict? Is there another thread I should be reading to see if this impacts me?
There are some tools to detect wireless congestion and they are quite useful at times but troubleshooting interference problems is mostly trial and error. (Often more error than trial)
The first thing to do is to be sure that your router is set on a good channel. 1 and 11 are usually good ones to try.
After that moving stuff around and/or turning off devices one at a time and testing is about all you can do without some specialized equipment.
When you are looking for interference issues remember that ir interference can be just as detrimental to Roku's performance as rf. I have found cases where a stuck remote key on an unused remote on a shelf was loading down the processor, apparently, causing the Roku to act like it was receiving poor streams and therefore re-buffering and dropping connection quite often. I even had a case where new curtains would heat up with the afternoon sun and generate enough random ir so almost all ir based remotes would cease correct functioning between about 3:00 PM and 6:00 PM on sunny days. That one was found by looking through the viewfinder of a digital camera and noticing that the blue curtains were lighting up with a sea of bright red dots when the curtains got warm. The fix was pretty simple: They installed a thin white liner between the curtains and the windows and then the curtains never became warm enough to act up.