NatCam doesn't support linear lighting. On some models of devices (some S7 Edge and S8 models), we see lag introduced by the graphics driver when NatCam is reading back data from the GPU. The current workaround is to disable the `PreviewData` flag in NatCam > Plugins > Managed > Platforms > Android > NatCamAndroid.cs. This workaround will disable the CaputreFrame function. We have the full fix coming in the next release.