Frame Drop Issue While Shooting on iPhone 16 Pro Max

When shooting 4K at 60fps in H.265 format with AppleLog-HDR on my iPhone 16 Pro Max, I experience severe frame drops, making it impossible to record properly, even when saving directly to the internal storage.
I purchased the iPhone 16 Pro Max in early December, and it’s still quite new with only 20% of the internal storage used. To enhance my filming, I’ve also invested in VND, CPL, and Black Mist filters, but due to this issue with the Blackmagic Camera app, I haven’t been able to use them at all.
Is anyone else experiencing the same problem?
If you’ve found a solution to this issue, I would greatly appreciate any advice.
I purchased the iPhone 16 Pro Max in early December, and it’s still quite new with only 20% of the internal storage used. To enhance my filming, I’ve also invested in VND, CPL, and Black Mist filters, but due to this issue with the Blackmagic Camera app, I haven’t been able to use them at all.
Is anyone else experiencing the same problem?
If you’ve found a solution to this issue, I would greatly appreciate any advice.