Bittrex cryptocurrency exchange has stated that Ethereum and ETH assets would be offline as Bittrex team would work around a performance issue with geth. Moreover, Bittrex is preventing new ETH and asset deposit addresses from being created due to incredibly high gas prices, while stating that existing deposit addresses will work as normal.
The problem is related to the Ethereum network, which is processing more than 1,2M transactions daily, which is more than all of the cryptocurrencies and blockchain networks, including Bitcoin. Also, the transaction fee of Ethereum is also significantly rising.
Due to incredibly high gas prices, we're preventing new ETH and asset deposit addresses from being created. Existing deposit addresses will work as normal.
— Bittrex (@BittrexExchange) 6 января 2018 г.
In the meantime, other major cryptocurrency exchanges like Binance, Coinbase or Bithumb did not publish any information regarding disabling Ethereum deposits, which means that the users might switch to those exchanges instead of Bittrex.