Hey jeffreyjin,
Since you are gaming over Wifi, it may be a case of WiFi Interference. Depending on which network you are on, I'd recommend changing your WiFi channel with the steps here to see if that helps. Anything on the 2.4G network will work best on 1, 6 or 11 and the 5G network anything under 48. Let me know how it goes.
Cheers,
Tony | Community Mod.