When running ccminer (Windows 10) on 6 NVIDIA 1070 cards, it picks up all 6 cards the first time I run it. But when I restart ccminer, it can only find 1 card. Every time I restart after the first time, it is only using 1 card. If I restart Windows, it will then work the first time, but that is it. Any ideas?

Device Manager shows 6 cards during the whole process, FYI.