Even the most cheapest tablets these days are 4 core @1.3GHZ or better or better with 1 or 2Gb ram and shouldn't have any issue playing camsites. Which are usually just a video on the left and a text chat box on the right/
Android tablets don't generally support flash videos so there are some site that just don't work on the default browsers.
Not too sure on your description of "pixels and static" can you take a photo? if its just blocky compressed videos its probably due low wifi speed as on mobile devices the stream will drop down to lower bandwidth.
try
www.speedtest.net run the speed check