Tracing route to 195.82.50.9 over a maximum of 30 hops

1 2 ms 1 ms 1 ms 192.168.0.1
2 8 ms 8 ms 7 ms 10.46.160.1
3 9 ms 8 ms 11 ms 213-245-252-12.rev.numericable.fr [213.245.252.12]
4 24 ms 22 ms 23 ms 172.19.132.146
5 22 ms 20 ms 20 ms prs-b5-link.telia.net [62.115.55.33]
6 22 ms 23 ms 23 ms prs-bb3-link.telia.net [213.155.130.20]
7 31 ms 29 ms 30 ms ffm-bb3-link.telia.net [62.115.123.12]
8 32 ms 28 ms 29 ms ffm-b1-link.telia.net [62.115.137.165]
9 162 ms 28 ms 27 ms kddi-ic-319844-ffm-b1.c.telia.net [62.115.32.106]
10 115 ms 30 ms 29 ms 195.82.61.14
11 31 ms 29 ms 29 ms 195.82.50.234
12 29 ms 28 ms 28 ms 195.82.50.9

ISP : SFR, France

These lag spikes have been happening to everyone in my raid group for a month or so. It's particularly noticeable in fights with moving objects (Byakko EX, O7S) that we have to dodge. These phases seem to cause the most problem, as we get a 1-2s lag spike nearly every single time the orb or the missile phase starts.
Our samurai and ninja have also been reporting their combos dropping for no reason.