Use SRB 1.6.8 it works, speed is not fast for older cards, but enough at the moment. In 1 or 2 weeks JCE wants to release his GPU miner for V8, then i will use this miner again.
At Monero V7 i switched with 2 Rigs from Claymore 11.3 to JCE, my effective Hashrate is raised from 9000 hashes to 11000 hashes.