BCH is usually more profitable to mine than BTC, and is the most common setting at Multipool.us.
Meanwhile, BTC is being mined normally, with 22 blocks found yesteday. But BCH remains a bottomless pit for hashpower at Multipool.us. And even worse, reward system is PPLNS so most people who invested hash power into this pool won't see any reward when a block is finally found 4-5-10 days from now.
That's because multipool mines BTC on Slushpool which has 2700-2800 PH hashrate. By mining you are pool mining with others on Slushpool as well and have a good chance of hitting blocks in a day. While in case of BCH, multipool are mining as individual in BCH network and pool hashrate is not that good against the network hashrate to get 1/day
I would say better to
1)Switch to solo pool for BCH if you are mining on a pool with low hashrate. Atleast you will have a full block reward but then again risks are very high as you may/or may not find block (depending upon luck)
2) Or, mine in mining pool with high hashrate (eg. viabtc) to have a good payout daily if you are worried about payout.