Yesterday I rode without any problems, also some very technical & steep climbs, but today I went to a local trail and as soon as I started pedalling uphill I was noticing some repetitive grinding/creaking noise coming from chainring area. I even felt this noise/vibrations through the cranks like it was something grinding metal on metal. I assumed it was a chain which has suddenly unevenly stretched so I turned around, went home and I put a new chain on, but the problem was still there. When I put some load on the motor I get this repetitive noise, no noise when pedalling on a flat or mild uphill terrain. I then reproduced it on a bike stand by pulling the rear brake (for simulating load) and pedalling by hand in Trail or Turbo mode, I marked a white dot on a chainring and a chain so I can see that noise is not repeating on the same chainring or chain position so this is quite clear marker that source is not the drivetrain:
Maybe not realted to this issue but during the testing on a stand I even reproduced infinite pedal spin after releasing any pressure to the pedals. This also happend to me several times on a trail but it was difficult to reproduce and even more difficut to record it on video when being out in the woods not having something to hold my bike with rear wheel up, but now I finally have it on tape:
So is my motor dying?