Hi.(sr for my englisch ) I was driving on highway and then im lost power on my bike, i can drive with stable rpm but throttle not react. There is a short video after driving.
https://youtu.be/lNHKR08P2N4
-1 cylinder did not working
- little bit oil from head
- its not spark plugs / baterry issue.
maybe valves? Idk. Maybe someone have the same situation .

 

It sounds like you have a cylinder that isn't firing. I say this because the bike is sounds like a lawn mower. I would pull the coils and ground them. Turn You can also get a tool for this that makes it really easy to test for spark. Unplug the others while testing, you don't need the bike running for this. Let us know what you find! Talk with you soon.