A couple of days ago, I got bored and decided to change some positions on the chain, and I happened to encounter a mempool that was packed… After you click confirm, you're basically throwing the transaction into a "queue pool," and miners/validators prefer to pick up transactions with higher fees first. Yours might just stay stuck: the wallet shows pending confirmation, the price has already changed, or it might even be rejected and you end up paying a failed fee for nothing. Later, I realized that during congestion, the worst part isn't slow confirmation, but the feeling that you're doing steady compound interest like yoga, only to have your breathing rhythm completely disrupted… Recently, with the main public chain upgrading/maintaining, everyone is guessing whether they'll migrate. I'm just being more cautious: either schedule ahead to avoid peak times or move less frequently, and don't force your way into the queue.