I can help with the super slow - on Oakmont #8 the long par 3, I was 34 feet away at 7 o'clock with 5 uphill, so 39 in total, I hit 84 slightly left and in it went.
tbh if u mess wiv these speeds in ur CC then it will surely ruin ur judgment and putting stroke on normally paced greens, so I have sworn to avoid ever playing any tourney that has these ridiculous green speeds.