Flash Causes Slowness and Freeze

Wow.  Thank you, Jeromie.  I've added the info you requested below.

There isn't any particular videos that I can offer.  Basically, within a minute or so of opening Firefox it begins to slow down.  For instance, on Facebook, scrolling is okay at first but then slows and, should I try to open any video from the timeline, the system reacts slowly and gets worse as I try to view them.  After maybe 2-3 minutes even the timeline slows to a crawl and freezes.  With Firefox I also get a constant set of error messages saying that a script has stopped and, when I stop the program it works for 2-3 minutes again and then the error message returns.  I clean up the Tools - Options - Clear Current Memory and Cached Web Content.  Something new is that I now keep getting messages that Firefox is low on memory and wants me to close everything, even though I only have one tab open.

Okay, that's the best explanation I can give.

About:Plugins -

Installed plugins

Find updates for installed plugins at mozilla.com/plugincheck

OpenH264 Video Codec provided by Cisco Systems, Inc.

- File: 1.1

- Path: C:\Users\John\AppData\Roaming\Mozilla\Firefox\Profiles\n61qg8jd.default-1399313894764\gmp-gmpopenh264\1.1

- Version: 1.1

- State: Enabled

- Play back web video and use video chats.

Google Update

- File: npGoogleUpdate3.dll

- Path: C:\Program Files (x86)\Google\Update\1.3.25.5\npGoogleUpdate3.dll

- Version: 1.3.25.5

- State: Enabled

- Google Update

Shockwave Flash

- File: NPSWF32_15_0_0_152.dll

- Path: C:\windows\SysWOW64\Macromed\Flash\NPSWF32_15_0_0_152.dll

- Version: 15.0.0.152

- State: Enabled

- Shockwave Flash 15.0 r0

Adobe Acrobat

- File: nppdf32.dll,nppdf32.dll

- Path: C:\Program Files (x86)\Adobe\Reader 11.0\Reader\browser\nppdf32.dll,C:\Program Files (x86)\Adobe\Reader 11.0\Reader\AIR\nppdf32.dll

- Version: 11.0.9.29

- State: Enabled

- Adobe PDF Plug-In For Firefox and Netscape 11.0.9

Silverlight Plug-In

- File: npctrl.dll

- Path: c:\Program Files (x86)\Microsoft Silverlight\5.1.30514.0\npctrl.dll

- Version: 5.1.30514.0

- State: Enabled

- 5.1.30514.0

Shockwave for Director

- File: np32dsw_1211151.dll

- Path: C:\windows\SysWOW64\Adobe\Director\np32dsw_1211151.dll

- Version: 12.1.1.151

- State: Disabled

- Adobe Shockwave for Director Netscape plug-in, version 12.1.1.151

QuickTime Plug-in 7.7.5

- File: npqtplugin5.dll,npqtplugin4.dll,npqtplugin3.dll,npqtplugin2.dll,npqtplugin.dll

- Path: C:\Program Files (x86)\QuickTime\Plugins\npqtplugin5.dll,C:\Program Files (x86)\QuickTime\Plugins\npqtplugin4.dll,C:\Program Files (x86)\QuickTime\Plugins\npqtplugin3.dll,C:\Program Files (x86)\QuickTime\Plugins\npqtplugin2.dll,C:\Program Files (x86)\QuickTime\Plugins\npqtplugin.dll

- Version: 7.7.5.0

- State: Enabled

- The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.

Picasa

- File: npPicasa3.dll

- Path: C:\Program Files (x86)\Google\Picasa3\npPicasa3.dll

- Version: 3.0.0.0

- State: Enabled

- Picasa plugin

Shockwave for Director

- File: np32dsw_1203133.dll

- Path: C:\windows\SysWOW64\Adobe\Director\np32dsw_1203133.dll

- Version: 12.0.3.133

- State: Disabled

- Adobe Shockwave for Director Netscape plug-in, version 12.0.3.133

WildTangent Games App V2 Presence Detector

- File: NP_wtapp.dll

- Path: C:\Program Files (x86)\WildTangent Games\App\BrowserIntegration\Registered\3\NP_wtapp.dll

- Version: 4.0.5.13

- State: Disabled

- WildTangent Games App V2 Presence Detector

Facebook Video Calling Plugin

- File: npFacebookVideoCalling.dll

- Path: C:\Users\John\AppData\Local\Facebook\Video\Skype\npFacebookVideoCalling.dll

- Version: 1.2.0.287

- State: Disabled

- Facebook Video Calling Plugin

Windows Live Photo Gallery

- File: NPWLPG.dll

- Path: C:\Program Files (x86)\Windows Live\Photo Gallery\NPWLPG.dll

- Version: 15.4.3555.308

- State: Enabled

- NPWLPG

Yahoo Application State Plugin

- File: npYState.dll

- Path: C:\Program Files (x86)\Yahoo!\Shared\npYState.dll

- Version: 1.0.0.7

- State: Enabled

- Yahoo Application State Plugin version 1.0.0.7

BrowserPlus (from Yahoo!) v2.9.8

- File: npybrowserplus_2.9.8.dll

- Path: C:\Users\John\AppData\Local\Yahoo!\BrowserPlus\2.9.8\Plugins\npybrowserplus_2.9.8.dll

- Version: 2.9.8.0

- State: Disabled

- BrowserPlus -- Improve your browser! -- http://browserplus.yahoo.com/

Microsoft Office 2010

- File: NPSPWRAP.DLL

- Path: C:\PROGRA_2\MICROS3\Office14\NPSPWRAP.DLL

- Version: 14.0.4761.1000

- State: Enabled

- The plug-in allows you to open and edit files using Microsoft Office applications

Microsoft Office 2010

- File: NPAUTHZ.DLL

- Path: C:\PROGRA_2\MICROS3\Office14\NPAUTHZ.DLL

- Version: 14.0.4730.1010

- State: Enabled

- Office Authorization plug-in for NPAPI browsers

About:Support -

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}

dxdiag -