I'm not very good at explaining those underlying details, but every time the chain gets congested, I can feel it: sending a transaction isn't just "press and it's done," but first queuing in the mempool, like takeout orders piling up in the rider’s hands. If you offer a lower fee, you might get cut in line, left waiting, or even forget what you originally wanted to do... That's how it usually goes for me.

Recently, with a bunch of testnet incentives and points farming, everyone’s guessing whether the mainnet will issue tokens, and more activity tends to cause more congestion. Basically, when there's congestion, the "spinning circle" you see behind the scenes is actually miners/validators selecting transactions to include, prioritizing those who bid higher. My approach remains the same: do less, watch more, and if you really need to operate, don’t rush. Better to be late and pay more than get stuck halfway and lose your cool.