Raspberry Pi 3 vs Pi zero LED erratic flickering

Hi All

I get erratic flickering when using the pi zero and I start Hyperion Screen Capture.

But when I use the exact same SD card led etc. in a Pi 3 it works perfectly when I start Hyperion Screen Capture.

Has anyone else experienced this and is there a setting or fix to get the Pi zero to work properly with Hyperion Screen Capture.

Thanks