I am powering the Raspberry with a 2A power supply and the LEDs with a separate one. Power isn’t an issue, since before the last update I run the Pi2 from the power of the TV and everything worked fine. But after the update I had to move back to the external power supply.
If the CPU usage is low, then this indicates a power problem. Otherwise a debug log will be a good place to start. To get a better understanding of the problem you are experiencing we need more information from you. Please see How to submit a useful support request - General - OSMC for advice on how to help us…
Just did a fresh install on a new SD Card, and I am experiencing the exact same issue. I installed the latest (2015.10-1) version onto the sd card. I am getting these HDMI issues on any media i am playing. I used a new 2A power supply.
I even tried with an older installation and the same thing is happening. I think this is a problem related to hyperion.