I had 2.5mg of thc every day for ~7 years. I couldn't remember the last dream I had when I quit thc in August. After not sleeping for 2-3 weeks I started having vivid nightmares every night for about a week. I'm still having extremely vivid dreams since, but they're no longer all terrifying. Sleeping better than ever and my anxiety is also better than ever.
I just read your comment after posting mine and it sounds like you've had a similar (but unfortunately opposite!) experience. The vivid dreams stop for me a few weeks after they start. Are your vivid dreams "permanent", or has it only been a short while since you started experiencing them?
Indeed, and IME, the dreams I have after taking a break from daily THC use are extremely vivid - to the point that I can remember them in detail for days afterwards. I enjoy that a lot.