Hi Thank you for your question and for providing your system details. I notice that you have a large number of plugins, some of which you may not need. I recommend (as a first step) you go through and clear out any you do not need. This [https://support.mozilla.org/en-US/kb/disable-or-remove-add-ons guide] may help. You mention that streaming is jerky..? This could be because your Flash plugin needs to be updated. I strongly recommend you follow the guidance in this [https://support.mozilla.org/en-US/kb/keep-flash-up-to-date-and-troubleshoot-problems guide] that will help you to update Flash. I hope this helps, but if not, please come back here and we can look into a different solution for you.