Use Selectum gui miner, in version 2.1 increased hashrate ETH/ETC/Grin and Beam
https://github.com/Selectum/Selectum-GUI/releases/tag/2.1

Dont Trust that User or click on any Links he posted or posting !
It has Malware in it when you download anything from this Links!
Watch out what you download.
You can Read more about that here : https://bitcointalk.org/index.php?topic=5182222.msg53785376#msg53785376

Thank you