300ms is pretty bad. If it's because he's "far away", he must be very far away.
NSW, AUS 54.153.204.70 201ms
SP, Brazil 54.94.129.208 168ms
ON, Canada 45.58.37.35 24ms
QC, Canada 198.50.134.193 35ms
Germany, EU 95.172.92.166 107ms
Ireland, EU 54.154.207.39 113ms
London, UK 88.80.191.58 98ms
NL, EU 104.155.37.25 105ms
Tokyo, Japan 54.65.9.39 164ms
Singapore 52.74.65.179 248ms
Taiwan 104.155.201.41 181ms
CA, USA 54.153.0.97 60ms
CO, USA 72.5.102.138 34ms
GA, USA 104.153.104.126 29ms
IA, USA 104.154.69.141 19ms
IL, USA 162.248.92.123 12ms
LA, USA 162.248.93.162 61ms
MI, USA 72.52.179.213 16ms
NY, USA 162.248.95.144 34ms
SEA, USA 66.150.164.232 58ms
TX, USA 104.153.106.185 34ms
VA, USA 52.6.121.192 28ms
As you can tell, I'm near Chicago, but even Japan, Australia, and Singapore are well under 300ms from me.
I should add, New York City to LA is 69ms. You should almost never see more than 70ms from any two points in the mainland USA. Well, Miami Florida to Seattle Washington is about 76ms, and that's nearly the two furthest points you'll get, 3300 miles.