astrial: Looks like this is still an issue today, and is not restricted to international traffic - tests run just now; although I am a bit puzzled why my router is taking so long to respond at times..
Pinging www.trademe.co.nz [18.104.22.168] with 32 bytes of data:
1 1 ms 2 ms 121 ms 192.168.1.1
Pinging www.google.com [22.214.171.124] with 32 bytes of data:
1 138 ms 172 ms 67 ms 192.168.1.1
if you are pinging 1-172+ms to your own router, you need to address that first, something is probably not right on your end, you may find fixing the cause of that will solve your other issues, i doubt your issues are related to this thread.