I often see my peers increasing their fee to me by a very small amount (5 ppm or less). To me this makes very little sense because you risk losing traffic due to FEE_INSUFFICIENT errors (until the upd...
I'm usually only increasing the rate once I'm seeing HTLCs failing due to insufficient liquidity and/or the channel is unbalanced, so there's not much risk. I typically increase by only 5 ppm, because I'm trying to find the free where flows will balance and then leave it there. (Not really achievable on small channels, but realistic for, say, 5+ m.)