No BT issue here.
We have 3x VS980s.
* Wife's: 100% stock, using (@all time) with Jabra HS & (few times a week) with a mini-speaker.
* Kid's: 100% stock using everyday with LG headset.
* Mine: rooted, using everyday with car's stereo (via Belkin and (now) Kinivo BT aux-adapter). various ROMs ..
+ Malladus: no issues
+ Slimkat, DU, Madhi (all versions) ... no issues (phones did rebooted a couple of times a month ago (while BT-streaming) on an old release).
I've been mostly on built-in kernel.