I have an original Stock ROM Galaxy S7 under Android 8.0Yes. Doesn't solve it completely, it's just better, had to go back to using a headset for video calls because it's not good enough, yet. This is probably the only thing about this experience that I wish did not suck as much as it does.
I've also had bluetooth disconnection issues (talking while driving, then if my internet signal disappears, the bluetooth disconnects. I think this is what is happening.) but I have changed to a higher version of the Bluetooth in settings, will test tomorrow if this is still the case
I experience the same random Bluetooth disconnections, while talking through on the phone in my car.
I've been experiencing these disconnections for the past 8 months.
They are all random, I was never able to replicate this issue myself.
Sometimes, I could have up to 3 disconnections in a row, other times it could be seamless.
Thus, I'm not actually sure it is 100% related to instabilitiea issues on this custom ROM.
The hardware may be at stake too...