After seeing the update changelog regarding the camera when viewing the app, I updated it to the latest version. My previous recurring issues like false detections of my animals were also fixed in this update (it was fixed by the custom firmware before as well). However another issue popped up and now the audio of the camera when viewing from the app has a screeching sound that is borderline unbearable to hear. I had to turn off the microphone because it's grating to the ears. I think there's also some delay/sync issue in the audio recording compared to the video shown but I need to test it more tomorrow. Strangely enough, the screeching sound isn't really that present in the recordings. The video is recorded via the H500 btw. I really wish there's a hotfix for this issue.

Edit 1: I just tested and did some recordings today and there are no delays in the video. Audio seems also fine when viewing the recorded videos. It's only during live view that the audio is screeching.