What do you mean by "flickering"?
Could you upload a sample to e.g. dropbox and put a link in here?
Hey Frostie, here's a link to YT... On acceleration you can see the flickering on the rear cam, hardly none on the front.On motorways, the flickering is constant. I was thinking if the mounts could get some anti shake, or maybe a gimble of some sort?
I watched the video you uploaded, and it did have a "wave" shape when driving at high speed.
You can use more rubber rings or 3M tape to hold the lens and reduce shaking.
Find some similar on Amazon, as long as the rubber material, can be used for fixing.
I know this effect. It is called "jello" and is caused by vibrations. I experienced the same on my Tiger 800 when riding at higher speed.
You can try to dampen the camera, but in my experience this will not really help. The cameras are simply too light to effectivly use damping materials like the mentioned rubber rings. I solved it by mounting the camera on a different position where it does not get much vibrations.
I don't know of any digital stabilization that would be able to correct jello effects.