I've been having this excessive lag as well on Ragnarok server during afternoon times (EU), making it impossible to do any crafting or gathering reliably. Here's my tracert (text in swedish, but you should get the gist).

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. Med ensamrätt.

C:\Windows\system32>tracert 199.91.189.60

Spårar route till 199.91.189.60 över ett maximalt antal av 30 hopp

1 2 ms 2 ms 2 ms gw17.a212.priv.bahnhof.se [85.24.234.129]
2 2 ms 2 ms 2 ms vl109-zinken.tule.net.opennet.se [62.116.228.42]

3 2 ms 2 ms 2 ms h-81-170-190-65.na.cust.bahnhof.se [81.170.190.6
5]
4 6 ms 2 ms 2 ms sto-kn71.sto-mar-ar1.bahnhof.net [46.59.112.142]

5 2 ms 2 ms 3 ms sto-mar-ar1.sto-cr3.bahnhof.net [46.59.112.158]

6 3 ms 3 ms 2 ms sto-cr3.sto-cr1.bahnhof.net [46.59.112.162]
7 3 ms 9 ms 4 ms te0-7-0-9.ccr21.sto01.atlas.cogentco.com [149.6.
168.141]
8 5 ms 5 ms 4 ms be2396.ccr21.sto03.atlas.cogentco.com [130.117.5
0.121]
9 24 ms 24 ms 22 ms be2281.ccr41.ham01.atlas.cogentco.com [154.54.63
.1]
10 114 ms 117 ms 114 ms be2186.ccr41.ams03.atlas.cogentco.com [154.54.74
.121]
11 111 ms 111 ms 111 ms be2194.ccr41.lon13.atlas.cogentco.com [130.117.5
0.241]
12 114 ms 113 ms 114 ms be2391.ccr21.lpl01.atlas.cogentco.com [154.54.39
.150]
13 111 ms 110 ms 110 ms be2384.ccr21.ymq02.atlas.cogentco.com [154.54.44
.137]
14 115 ms 115 ms 115 ms 38.122.42.34
15 114 ms 114 ms 113 ms 192.34.76.10
16 116 ms 115 ms 115 ms 199.91.189.242
17 * * * Begäran gjorde timeout.
18 * * * Begäran gjorde timeout.
19 * * * Begäran gjorde timeout.
20 * * * Begäran gjorde timeout.
21 * * * Begäran gjorde timeout.
22 * * * Begäran gjorde timeout.
23 * * * Begäran gjorde timeout.
24 * * * Begäran gjorde timeout.
25 * * * Begäran gjorde timeout.
26 * * * Begäran gjorde timeout.
27 * * * Begäran gjorde timeout.
28 * * * Begäran gjorde timeout.
29 * * * Begäran gjorde timeout.
30 * * * Begäran gjorde timeout.

Spårning utförd.

C:\Windows\system32>

Just a string of timeouts in the end. That doesn't look good. I also tried pinging, but that just timeout'd as well.