I knew it for years and experienced it when I was experimenting with DeFi on ETH earlier this year.
Just stick to LASSECASH it has no fees and Hive-engine.com only charge 1% for deposits and withdrawals, but as a long term investor its a little ones your funds are in LASSECASH there are no fees!
Also dswap.trade is HEs answer to DeFi on Hive blockchain.