After mining for a couple minutes, I stop getting shares. Can anyone explain why this would be happening? When I restart the program I quickly get shares, then after a couple minutes it almost completely stops getting shares.
I got an answer from reddit. 

"Because you're mining on a variable difficulty pool... Which means you start out mining super low diff, and then it auto adjusts to a different difficulty level so that you get X amount of shares per X amount of time.

And now for the obligatory mention of NO, if you restart the miner a million times you aren't making $$$$$$$$$$$. Low diff shares worth less than high diff ones."   - CrateMayne