I run a Thrustmaster Warthog joystick and throttle with my Rift. I really only play Elite Dangerous.
I've tried V a few times since getting my Rift( 6 months or so) and the problems have persisted . Using voice attack compounds the issues.
V will function normally for a short time, then will glitch out, then my ship will start flying itself and crash into things. Somehow it causes buttons to press themselves per say. It's like driving a haunted spaceship with a deathwish. I usually get frustrated and uninstall it after about 10 min. Problems cease after I ununinstall V and restart the game.
Also, for the record, this text entry field is really glitchy on mobile. It is also super frustrating. Whole sentences will just disappear at random.