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I'm already using a 3mm offset ring, but have bought a 6mm to see if that makes things any better. Tbh, it's previously been quite quiet, but only recently starting soundy grumpy. The only thing that changed was switching chain lube, oddly.
I've not checked the hanger alignment either, but it's actually shifting fine. Just a low rumble of chain dis/engaging under load, and moreseo in larger cog.I'll probably just not bother pedaling anymore, that's the simplest fix
TooTallTim-
Yeah try it out.
Beware muc off wet and urban and other veg oil based lube, causes the chain to become very sticky and reduces the amount of sideways flex is meant to have to give good gear shifting. Come across loads of bikes where the only thing wrong with it is needs all the old congealed chain lube off it.
BrickMan
This is common place tbh. I build a fair number of custom gravel and mtb, and most of thrm will make a noise under load in the easiest casette gear, especially with these 50t+ jobs.
Some rings make less noise, some rings last longer.
Try a 3mm or 6mm offset ring if its really bad, but beware that they always make noise when new. Once ring has some gritty miles on it they usually become quiet enough to be a non issue.
Hope evo cranks are good, a mftr that has always shared technical info and made it as clear as poss which part is the right one for the job. Unlike so many other that make it a right pita.