Flicker Snapchat

I can no longer use snapchat indoors as the camera is constantly flickering, I have tried to uninstall the app and re install it however the same issue.

When using the camera outside snapchat there is no issue, I have contacted snapchat and they have basically said it's an iPhone error and have offered me no further support. Please help if you can.

Recorded using the native camera app on iPhone https://youtu.be/I68KTvNTF7s

Recorded using the camera within snapchat iPhone (no filters) https://youtu.be/WKBPNjLJZFo

I am using an iPhone 6 with latest firmware and latest version of Snapchat. It started to happen randomly and no new apps were installed. The camera also does not flicker in any other app apart from snapchat.