volatility does not always go with low liquidity. Its not the problem for leverage traders that ETH goes up and down 30% in one day if you can open/close 1 milion $ position at close to 0 spread. The problem is when your stop-loss or even worse margin-call closes pushing price few % down because of zero liquidity.
@OP
It depends on leverage, position size, proportion of real trades and fake trades (avoid shady exchanges), volatility. Mostly I would not leverage trade coins below $500M daily volume.
volatility always happens on low liquidity coin, name a low liquidity coin that does not have a big gap between buy and sell?
that is exactly what I was talking about liquidity of leveraged altcoin.
without a sufficient liquidity to cover the open leveraged altcoin, it is very easy for user to get liquidated because the price movement will be huge. even with stop loss feature, as long as there is not enough liquidity you will get burned easily.