Flux S Noise

Hi

I have had the Flux s for the last 4 years and have always found it overall noise but thought it was normal but now having seen a few videos of others that doesn't seem to be the case.

I tried to find videos with similar noises to try and understand what the the issue might be but haven't quite found anything that is exactly similar , so was just looking to see if anyone have any thoughts or suggestions please?

https://imgur.com/a/5Eu4ggg

I have ordered a new belt in case that was worth trying

I have also noticed that in ERG every so often it struggles to maintain the Watts for a minute or so before being ok again.

Any help would be much appreciated