I'm shooting with an Osmo Pro, with the Zenmuse X5 and I'm having an issue with this gross speckly noise. Anyone know what's causing this and how to fix it? Google has been no help. All of my footage looks like this.

Aperture on these shots were generally close to completely open, but even closing it had no effect on the noise. Shutter speed is generally around 100, ISO generally around 100.