When my Note 7 is connected to our WiFi, my son's ping is too high, and he cannot game. When I disconnect my Note 7 from our WiFi, my son's ping drops to around 25-30, and he is able to game again. My son's Computer is a desktop, and he is hardwired to our router.
When my Note 3 or Note 4 is connected to our WiFi, we do not have this issue.