Flash Video performance is horrible in Internet Explorer 11 & 10 Win7 64bit

Video performance is horrible with Internet Explorer 11 & 10 on a Win7 64bit system.

Flash Player version 12.0.0.70

The video is choppy and stuttering and it's dropping frames no smooth playback is possible.

HTML5 Video playback is super smooth in IE 10 & 11.

ActiveX Shockwave Flash Add On is installed correctly and activated.

ActiveX filtering is off.

nvidia Video hardware (Quadro FX 2700M) drivers are current and up to date with the latest version 332.50

Tested with Flash hardware acceleration on and off = same problem

Tested with Internet Explorer hardware acceleration (software rendering) on and off = same problem

Any suggestions what the culprit may be?