whatever..my comments are literally not staying..lol..anyways..Long story short..IF I have to im gonna just take it to the LBS and get it looked at. Since I have no tools to take the cassette off and no bike stand to do real pedaling tests etc..Im going to just have to bite the bullet..

Your cassette is probably worn out on the smallest cog since when you put power through the pedals, the chain is skipping.

If the rear derailleur has a lot of play it might be in one gear or halfway butt if you push a linkage in or out it will be in another, and cage might also rock side to side, it might sag towards the wheel, also the wear in the pivots can mean tthe Rd points away from the bike to the front, thus resulting in misshifts or perfect shift at a even asphalt section but when you hit a bump the swing arms will move side ways changing the position, the cage might pivot side to side, thus causing miss shifts or skipping.

Very interesting!!

B tension clearance or different wear on components

I had same problem a few days ago after working on my bike

If if it's very bumpy and you use a low gear at the front, bad things might happen, cus this RD is horrible, I have had it in the past, chainsuck at first ride home from the shop, the cage is pivoting up and down a lot.

hey what happened did u get it fixed what seemed to be the issue what caused it i am facing similar issue with my mtb

PART 3:...My mind is thinking 1 I messed up the chain when i sized it...2 maybe messed the chain up when I originally stomped on the pedals somehow...3 messed up the cassette when i stomped on the pedals originally...4 the derailleur is messing up,although it was all perfectly fine before I EVER bought anything new and replaced anything on the bike..Even the worn out original chain,cassette,and chainring worked ok..IT was just time for replacing everything..

You might need to tighten the preload on the hub, this is a hub with cup and cone setup, the hub might be moving side to side, it might be pivoting slightly, the axle might be bent too.

did you experiment with different cassette,wheel,rear derailleur? swap one component see how it does,if that does not do anything then next component, and so on?

try tightening your H limit screw .. then gently loosen it until the chain aligns with the first cogs .. you may want to loosen the barrel adjuster too, to take away the cable tension out of the equation when doing this

Help me

Was that Acera RD-M360?

I’ve been using a newly bought sram nx and im having the same problem. It seems like the chain is skipping when im pedaling hard. Any suggestions on what to do?

How did u Put ur camera?