Responsetime of hop 12 (80.91.251.98) is much higher than hop 11 (80.91.249.113) and a ping test did show lost packets on hop 12 but not on hop 11.
11 prs-bb1-link.telia.net (80.91.249.113) [AS1299] 25.882 ms 125.402 ms 25.827 ms 12 ash-bb1-link.telia.net (80.91.251.98) [AS1299] 108.584 ms 113.053 ms ash-bb1-link.telia.net (80.91.252.36) [AS1299] 158.407 ms
Hop 11 is in Paris, hop 12 in Ashburn. I don't see anomalies considering the latency, as the atlantic is in between.
The path seems to be multipath, but this is still ok. The loss / congestion could be on the return path, for proper diagnosis you need a traceroute from the other end, too.
Check return pathes to proxies and compare them to the direct link... and, as Victor already said, don't expect guaranteed latecy on a xDSL service...
HTH, F.