Need help - chronic freezeups when playing streaming flashplayer videos.:

I am having a chronic problem with repeated freezeups of flashplayer videos that are being streamed online where the video repeatedly and randomly locks up for a moment, and then jumps forward to catch up to where it's supposed to be again and again, with no regularity or pattern to it at all.  It doesn't matter which video it is; it doesn't matter where along a video's playback it is; it doesn't matter which website it is.  This problem happens at any time of day, and every single day, at random, regardless.  I've tried everything including reinstalling my Windows 8.1 64-bit operating system from scratch, and then trying streaming flashplayer videos before reinstalling any other software again first - no help.  I tried streaming in Safe Mode; disabling all browser addons; disabling all startup executables; disabling my internet protection software entirely, each in turn - no help.  I always keep Flashplayer, Shockwave player, and Adobe Reader up to date, along with the rest of my PC via Microsoft Windows Update, and any other updates that apply, but I even tried older versions of drivers as well as the very newest ones - no help.  I tried streaming using different video cards - no help.  I tried using an ethernet connection and then a wireless one, separately in turn, as well as connecting to a different network - no help.  I also have Mozilla's Firefox browser installed and fully up to date - the exact same random, constant freezeup problem streaming flashplayer videos happens when using it as when using Internet Explorer.  These freezeups act like the incoming internet stream's feed runs ahead of flashplayer's memory management (rendering?) of it, causing these momentary freezeups while flashplayer buffers, and then jumps forward to catch up again each time.  Please contact me back and provide a corrected update(s) of flashplayer to download so as to play streaming flashplayer videos without this ongoing conflict.  Please note that video files that are downloaded/installed on my hard drive do NOT have playback problems of any kind.  This is only an online streaming problem with flashplayer.  Thank you.