My gaming laptop with a GTX 1070 has those strange Core Clock dips during mining. If I game or stress test it the core clock just drops marginally due to power limits
Building GTX 1070Ti Mining Rig - Crypto Mining Blog
Fixing a LOW Hashrate GTX 1070 Mining Ethereum at 8Mh/s Only? - YouTube
My 1 Month Old 6x GTX 1070 SC2 Mining Rig : r/EtherMining
GTX 1070 benchmark with Ryzen 9 3900X 1080p, 1440p, Ultrawide, 4K benchmarks at Ultra Quality - GPUCheck United States / USA