Camera problems with LR6.1.0 and iOS 14.3 when using RAW

Hello 

Since a few days, I'm experience problems with the LR mobile camera. When trying to capture RAW files (DNG) the photo isn't saved to the library. There is no image preview in camera mode at all. This problem started when using iOS14.2.x on iPhone 12 pro. Today I updated to iOS14.3 and the images started to get stored again, at least the few test shot I made so far, but now the camera preview is updating in about 1fps, making it really hard to take photos. If I switch to jpeg capture mode, everything works normal. 

Anyone knows what may cause this behaviour?

BR

Mikael