Seiko NH70A stops on its own.

Hi guys and gals.

I bought a watchmaking kit back in august.
The watch was working perfectly, I adjusted it on my timegrapher, which i bought for this watch.

The watch was running fast intentionally.

Now I have problems with the watch just stopping.

I got it on video if you would like to see it and if i can upload it.

Yes I did wind it. Today like 20 revolutions of the crown + what I recorded on Video.
But she still stops after a few minutes and sometimes within a minute.

Can you help me?
I really love this watch and I loved building it, even though it is a new hobby for me personally.

Greetings Marek.