User Agent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.36 Steps to reproduce: Environment 1. OP System: Windows 7 2. Brower Type: Mozilla Firefox 3. Brower Version: Nightly--37.0a1 (2015-01-03) Steps to produce 1.Install Firefox Nightly 2.Launch youtube 3.Play any video Actual results: 1.Video shuttering observed when play back. Note:- 1.This is also observed in differing modes at random. Expected results: 1.Video should play normally without shuttering. Let me know if you need more information about this bug.
Unable to reproduce in 38.0a1 (2015-01-12) Win 7. Please check if the issue occurs using Firefox in safe mode (with your addons disabled): http://support.mozilla.com/kb/Safe+Mode And on a new, empty profile: http://support.mozilla.org/en-US/kb/Managing-profiles#w_starting-the-profile-manager
Reporter not responding to needinfo. Re-open if this is still an issue.