Noodle parallel to the grain with bark on ground. Sawdust looks like noodles. With chain nice and sharp it should cut easily.
What you did was milling. That’s why they recommend 90+cc for that. It leaves all fine powder and requires more power to make the saw cut. Cutting lengthwise with the log is much easier and leaves long noodles
To noodle efficiently, the bar needs to be longer than the log, in my case 24". Keep the bar tip down, power head up & let the saw work through about 3/4 of the way on the tip end then lower the power head end. Clears the fibers better that way ime. The more saw you have the better.
I don't noodle a ton, but I have never had premature dulling when doing it...in fact just the opposite...the chain seems to hold its edge longer...
I've never noticed any difference in chains going dull when noodling. It's all in what abrasive material you are hitting with the chain. A tip for anyone new to cutting firewood, is always look at the log/ round your to make your cut in and remove the dirt. Anything that's been skidded will always have more dirt and rocks in it.