You can use nanominer to mine Pascal coin and Ethash/Ubqhash/CryptoNight (v6, v7, v8, CryptoNightR, Reverse Waltz)/Cuckaroo29 algorithms at the same time without any performance losses. Pascal is CPU designed coin, so it won't disturb GPU mining performance and can be a pleasant bonus for your mining.
Bellow you can find a configuration file example for Ethereum and PascalCoin:
[Ethash] wallet = 0xffffffffffffffffffffffffffffffffffffffff rigName = rig1 email = [email protected] pool1 = eth-eu1.nanopool.org:9999 pool2 = eth-eu2.nanopool.org:9999 pool3 = eth-us-east1.nanopool.org:9999 pool4 = eth-us-west1.nanopool.org:9999 pool5 = eth-asia1.nanopool.org:9999 pool6 = eth-jp1.nanopool.org:9999 pool7 = eth-au1.nanopool.org:9999 [RandomHash] wallet = 123456-77 paymentId = ffffffffffffffff rigName = rig1 email = [email protected] pool1 = pasc-eu1.nanopool.org:15556 pool2 = pasc-eu2.nanopool.org:15556 pool3 = pasc-us-east1.nanopool.org:15556 pool4 = pasc-us-west1.nanopool.org:15556 pool5 = pasc-asia1.nanopool.org:15556