Time gandicap

It looks some players have time gandicap when plaing bullets (2min-0sec). I noticed, often US players look have 3 minutes and me 1 min, but some guy from Central America (Salvador) played against me vice versa, as if having less than minute, while I had like 3 and got too irritated and blamed me by the dirtiest courses...
I think that's due to Chess.com server residing somewhere in US and too narrow channel from some country to outer world. Or may be due to Wi-Fi connection between PC & residential router...