Choppy/laggy video on HDMI out

I have had a video jitter / choppy video playback when my laptop was projecting it's screen to my TV via HDMI for several months. This morning I managed to fix it. A few months ago I had raised the display resolution being projected over the HDMI cable to 1920x1280 so the desktop would display completely on my TV, without being cropped. This had caused video to play jittery, so when I rolled back the resolution to 1280×720, video became smooth again.

Note, the HDMI Digital Display setting in the Display properties was only available for adjusting once the HDMI cable had been plugged in. Hope this helps someone.

been having this issue and couldnt figure it out - eventually i checked the refresh rate of my TV under the intel graphics properties - it defaulted to 29, set it to 60p HZ and instantly fixed the issue!!

For some reason intel "sees" TV and assumes its an old style TV! mine was a 48 Samsung LED..