1. v8 is not v7. It's a new algo version, it hashes a bit slower and draws more power. It's the same for everyone. Deal with it.
Exactly. This hash rate drop doesn't affect anybody's earnings in a negative way. You get your rewards proportionally, which means you will still earn as many XMR as before the fork. Keep it real guys.
The only issue could be increased power consumption and heat. I always preferred to mine XMR over ETH, since ETH uses more power and generates more heat. Thankfully, winter is coming in Europe so extra heat won't be an issue for a while.