That sounds like a NAT Type/connectivity issue. It's not country-specific.
You need to port forward and/or enable UPnP on your router... or Sony could finally implement IPv6 on the PS4, so NAT wouldn't be needed anymore.
That being said, I fully expect NAT Type 3 juggernauts (aka zero bar warriors) to make a triumphant return and ruin plenty of matches. :S
Thanks! Yeah, Sony enabling IPv6 would make things so much easier.
So of course now when I get home, I need to check my router to see if port forwarding/UPnP is enabled....
Also, my experience with Sony's franchise multiplayer dying quickly is based on Killzone Shadowfall, which is obviously a different story and won't mean that UC4's multiplayer will dry up quickly. "Ghost town" is too strong of a word.