Hi, since patch 4.1 i have been experiencing high world latency - around 200 and 300ms. Home latency is normal at 60-80ms.
Have tried running repair tool, deleting WTF, Cache and Interface folders.
Changed network card advanced settings according to Blizzard suggestions at support page.
Switching on and off "Optimise Network for Speed" doesn't change anything much.

ISP - Lattelecom
Country - Latvia
Modem (and firmware version if known) - Thomson SpeedTouch 546(i)v6
Router (and firmware version if known) - none
Network device (Driver version if available) - Realtek RTL8111B PCIe 1.0Gbps; driver version: 7.043 (2011/4/21)
Type of connection used (Wireless / USB / Ethernet) - Wired Ethernet
Operating System - Windows 7 Ultimate SP1
Security Software installed (Firewall, Anti-Virus) - avast! 6.0.1125, Windows Firewall and Malwarebytes Anti-Malware 1.50.1

Tracert
Tracing route to 195.12.234.160 over a maximum of 30 hops

1 15 ms 16 ms 16 ms 87.110.124.1
2 16 ms 19 ms 15 ms 195.122.0.42
3 20 ms 19 ms 19 ms 195.122.0.42
4 46 ms 46 ms 46 ms prn-sr1-xe-1-2-0-0.ee.estpak.ee [195.250.170.49]
5 50 ms 49 ms 61 ms prn-bb2-xe-7-2-0-0.ee.estpak.ee [90.190.134.112]
6 48 ms 45 ms 46 ms kjj-bb2-xe-7-2-0-0.ee.estpak.ee [195.250.191.89]
7 45 ms 45 ms 47 ms hls-bb1-xe-0-0-0-0.fi.estpak.ee [194.126.123.82]
8 45 ms 46 ms 47 ms hls-b3-link.telia.net [213.248.85.117]
9 75 ms 46 ms 48 ms s-bb1-link.telia.net [80.91.249.0]
10 60 ms 58 ms 57 ms ffm-bb1-link.telia.net [80.91.248.53]
11 67 ms 67 ms 63 ms prs-bb1-link.telia.net [80.91.245.105]
12 64 ms 63 ms 64 ms prs-b4-link.telia.net [80.91.251.47]
13 * * * Request timed out.
14 * * * Request timed out.
15 * * * Request timed out.
16 * * * Request timed out.
17 * * * Request timed out.
18 * * * Request timed out.
19 * * * Request timed out.
20 * * * Request timed out.
21 * * * Request timed out.
22 * * * Request timed out.
23 * * * Request timed out.
24 * * * Request timed out.
25 * * * Request timed out.
26 * * * Request timed out.
27 * * * Request timed out.
28 * * * Request timed out.
29 * * * Request timed out.
30 * * * Request timed out.

Trace complete.

Pathping
Tracing route to 195.12.234.160 over a maximum of 30 hops

0 [removed]
1 87.110.124.1
2 195.122.0.42
3 195.122.0.42
4 prn-sr1-xe-1-2-0-0.ee.estpak.ee [195.250.170.49]
5 prn-bb2-xe-7-2-0-0.ee.estpak.ee [90.190.134.112]
6 kjj-bb2-xe-7-2-0-0.ee.estpak.ee [195.250.191.89]
7 hls-bb1-xe-0-0-0-0.fi.estpak.ee [194.126.123.82]
8 hls-b3-link.telia.net [213.248.85.117]
9 s-bb1-link.telia.net [80.91.249.0]
10 ffm-bb1-link.telia.net [80.91.248.53]
11 prs-bb1-link.telia.net [80.91.245.103]
12 prs-b4-link.telia.net [80.91.251.47]
13 * * *
Computing statistics for 300 seconds...
Source to Here This Node/Link
Hop RTT Lost/Sent = Pct Lost/Sent = Pct Address
0 [removed]
0/ 100 = 0% |
1 18ms 0/ 100 = 0% 0/ 100 = 0% 87.110.124.1
0/ 100 = 0% |
2 18ms 0/ 100 = 0% 0/ 100 = 0% 195.122.0.42
0/ 100 = 0% |
3 17ms 0/ 100 = 0% 0/ 100 = 0% 195.122.0.42
0/ 100 = 0% |
4 48ms 1/ 100 = 1% 1/ 100 = 1% prn-sr1-xe-1-2-0-0.ee.estpak.ee [195.250.170.49]
0/ 100 = 0% |
5 50ms 0/ 100 = 0% 0/ 100 = 0% prn-bb2-xe-7-2-0-0.ee.estpak.ee [90.190.134.112]
0/ 100 = 0% |
6 51ms 0/ 100 = 0% 0/ 100 = 0% kjj-bb2-xe-7-2-0-0.ee.estpak.ee [195.250.191.89]
0/ 100 = 0% |
7 48ms 2/ 100 = 2% 2/ 100 = 2% hls-bb1-xe-0-0-0-0.fi.estpak.ee [194.126.123.82]
0/ 100 = 0% |
8 48ms 1/ 100 = 1% 1/ 100 = 1% hls-b3-link.telia.net [213.248.85.117]
0/ 100 = 0% |
9 58ms 0/ 100 = 0% 0/ 100 = 0% s-bb1-link.telia.net [80.91.249.0]
0/ 100 = 0% |
10 64ms 0/ 100 = 0% 0/ 100 = 0% ffm-bb1-link.telia.net [80.91.248.53]
0/ 100 = 0% |
11 63ms 1/ 100 = 1% 1/ 100 = 1% prs-bb1-link.telia.net [80.91.245.103]
0/ 100 = 0% |
12 66ms 0/ 100 = 0% 0/ 100 = 0% prs-b4-link.telia.net [80.91.251.47]

Trace complete.