Square, your NA/EU data centre has serious issues...

[Raist]

This is odd:

8 38 ms 41 ms 37 ms eidos-vpn.gigabitethernet3-39.ar4.lon3.gblx.net [64.213.77.134] - This is an authentication check hop on the Square side, but why through a VPN?
9 * * * Request timed out. - I wonder if it times out because the check failed or the SSH crashed midway

13 118 ms 118 ms 122 ms te0-1-0-4.ccr21.ymq02.atlas.cogentco.com [154.54.26.141]
14 125 ms 125 ms 125 ms 38.122.42.34
15 * * * Request timed out. - This is on the Square side. Maybe a route table error?
16 113 ms 113 ms 113 ms 192.34.76.2
17 110 ms 110 ms 110 ms 199.91.189.234
18 113 ms 113 ms 110 ms 199.91.189.28

The EU hops are much more direct and the drops there may be influenced by passing through the VPN for authentication. Are you using a VPN? Is there anyway you can get away from that? That's definitely host side. Save that trace and send it to Square with a ticket.

The NA hops you have a ton of. The longer the route, the less stable the connection becomes. Notice that your latency doubles between hop 12 and hop 13 (Same city, just different hub) That's influencing the drop on hop 15. It may not be the catalyst, but it's definitely not helping.

Should be noted that the 209 IP is NOT a game server---that is the EU website for Square-Enix. IDK where those IP's came from, but they are NOT the right ones to use. All three of those being pushed as the "data centers" are actually web servers--one of them is the old www.eidos.com IP and has A records for their games assigned to it.

Need to focus on the 199 IP's---those are the game servers.

[Marishi-Ten]

Should be noted that the 209 IP is NOT a game server---that is the EU website for Square-Enix. IDK where those IP's came from, but they are NOT the right ones to use. All three of those being pushed as the "data centers" are actually web servers--one of them is the old www.eidos.com IP and has A records for their games assigned to it.

Need to focus on the 199 IP's---those are the game servers.

Ah, I didn't catch that. My bad! That would explain the vpn passthrough and the check fail.