I got this lovely reversible olive drab silicone coffee dripper and mug set locally (from Lazada Philippines). Rivers is a Japanese brand. The side with the fat ribs flows faster, so I make sure the fat ribs are in the inside of the dripper. It’s great for camping.
I get a sweeter brew out of it. By faster flow I meant I used to get 3:00 flow on V60, but on the Rivers it’s 2:30.
Looking at your picture, you used medium to coarse, yes? Have you tried finer ground?
About 18 clicks on the Timemore C2. Medium, yes. I usually stick from 16-18 clicks when brewing this way.