No deep sleep?

But he compared the Vivomove 3 too and this watch had good sleep stages, at least deep sleep was almost perfectly correct. And it is a cheap Garmin watch. 

I have no deep sleep problem with my Epix 2. It tells me data I get form every other Garmin like Fenix 6s Pro or Venu 2s too. 

Maybe it really is about weight and HR sensor? Or size and HR sensor? I will test the Epix 2 again with Venu 2s compared, which is very small and light. Same sensor. But I have to get the Venu 2s working again... But they have done something to the sleep stages according to update text from 8.05. Wait and see. 

I don't understand why Garmin hasn't addressed this issue with these new watches. There are many complaints about deep sleep in previous watches (I have the Fenix 6 pro) and yet they add gimmicks like a flashlight etc. What about focussing on fundamentals like accurate sleep tracking? I really hoped the Fenix 7 / epix 2 would fix these issues but it's clear they are still present, so I will not be upgrading. How can a cheap watch like a Fitbit charge be much much better than these expensive watches? Sticking with my Fenix 6 but I'm really disappointed in Garmin.

The question is how well the others are, or if their sleep metrics just follow a more generic /standard sleep pattern. I agree the sleep measurement isn't spot on, but I do notice difference when I take medication, drink or do a workout before bedtime in sleep quality. 

I have the feeling Garmin actually shows you what is measured and other (cheap) devices just measure movement and try to paste it into a general sleep pattern. I had a Fitbit and it gave me a lot of deep sleep, but I sleep terrible .

Lucky for us, inprovements for sleep interpretation are mainly a software achievable . So who knows, maybe it will get better.

I don't know which Fitbit you had, but the Fitbit charge series is really good at tracking the sleep. Have a look at the screenshot that "Hexxer" posted in this thread. The higher in the table, the better it scored at sleep tracking. This guy "scientifically" tests watches for sleep: https://www.youtube.com/watch?v=Ka9LXKQy-fQ and the Fenix 7 scores really low.

It's true that none of them is perfect, because in order to track sleep, you have to measure brainwaves (and eye movement etc) but still Fitbit charge 5 still performs really well for a watch. According to my Fenix 6, every night sleep I have is restless and I lack a lot of deep sleep. Not sure how I can still perform in life if it were true what the Fenix was saying :D I switched back to charge 5 for a week, just to confirm that I don't have any sleep issues. (which I didn't have). The guy in the video above, confirms the deep sleep issues on the Fenix 7.

I agree that this is software related, the issue lies in the algorithm but I doubt we'll see any updates on that. Garmin's weight scales have a bug that always shows extremely high body fat percentages (athletes with sub 10% body fat, giving a reading of 24%) and it's still not fixed. There were many topics on this a year ago, and the community even found the issue in the calculation, yet they did nothing with it and just closed down the topics. Garmin doesn't listen to customers, and that will eventually be their downfall.

Ok thanks. Guess it is worse  :-).
I saw this new setting on my watch to register HSV. In default it is off. 
Would that make any difference? TYou would think they would use heart rate variability.

Yes I think in theory it could make a difference, and improve it. Even the guy in the video said he's still investigating it further to see if he missed any settings that could imrprove it. But it would make sense that the use of HRV would improve things. It depends if Garmin's algorithm uses those values. But it's worth a try. If it improves, could you please update us here? I really hope it's possible to accurately track it because I want to upgrade to Fenix 7 or Epix 2 but sleep tracking is a must for me.

I contacted Garmin support, and they confirmed that nothing has changed in the area of sleep tracking between Fenix 6 and Fenix 7/Epix 2. So no upgrade for me unfortunately.

So as I pay more attention to the metrics, the data seems totally random. Many days are 0-15min, followed by over an hour, despite consistent total sleep and bedtimes. This is while my ring records much more consistent and “believable” numbers. Ultimately I am not concerned as much with the exact number recorded, but rather the relative trend to help judge recovery. I guess I will ignore the garmin data for now and continue to use Oura.

Thanks for confirming that it's still not good enough on the epix. I really want to upgrade so bad because of the looks, but if the sleep issues aren't fixed I will get buyers remorse. Thanks for saving me the energy/money.