I experience it frequently. On nights I do experience it, it will be multiple times. Other nights are fine.
It was rough at first, and I had to start digging online to figure out what was happening. My gf, being a RN, helped. This was before it became more common knowledge.
Thankfully I don't have the visual hallucinations, only the auditory. And while I now know what it is as it's happening, there are still moments where I am convinced someone is around when they shouldn't be. Like I'll think my gf came back from work early for some reason, or didn't go even though she said goodbye and I heard her leave before going back to sleep. Other times I'll think someone random came in. I actually talk to myself during this and try to rationalize, but being immobile and stuck physically somewhere between ... I guess awake and half-awake... that messes with you. It messes with me anyway. So I strain against it. Ultimately I need to basically force out a yell (in my mind it's yelling, in reality it's some kind of whimpering according to my gf) to break free. She works nights often and will sleep in another room when she gets back so as not to wake me. When she hears me do that, she comes and cuddles me. I can instantly sleep fine afterwards. Just a presence, but she has to have some physical contact. Even a hand will do.
I absolutely hate it. And I hate knowing that once it happens, when I do go back to sleep, it'll happen again quickly 9 times out of 10. It's never just once. I'd say 2-3 times a month these nights occur.
I'm very happy I don't have visual hallucinations. I'm less happy that I haven't (yet) been able to use the tactics described online to control it and enter Wake Induced Lucid Dreams, if they really do exist. It's hard to remember to do those things when you're awake and basically paralyzed, completely aware of that fact, and hearing random sounds from the first floor when you know no one's home. I hope to achieve some form of control. For now, I hate it. Absolutely hate it. And I know some people have it WAY worse than me.
The first times were very confusing. I think it's more infuriating now, but less scary.
edit: And I should add that it first occurred many years ago but didn't resurface until the past two years. This past year is when it became more commonplace. It's made me fear actual paralysis more than anything. I cannot begin to imagine.
edit2: I also have that feeling described below me often. I'm awake, I'm conscious, but some kind of dazed/drugged. Not everything is in focus or clear. Muffled. Like being underwater. Sluggish. Mostly. Sometimes I'm much more sharp and that's even worse tbh.