Guild Wars 2- Priority Traffic Required

[#1]

Hi All,
Please find enclosed a full list of IP Addresses used by ARENANET - which can be used for GW2.
Guild Wars 2 requires TCP ports 80, 443, 6112 and port 6600 be fully unrestricted and accessible, both inbound and outbound.
Can we please ensure that this traffic is giving a 'gaming' profile for Pro users - currently there is an excessive amount of in-game lag/latency whilst using this product.
FULL IP Address list below:
Guildwars 2:  (These are the game servers for both EU and US Players - not the login servers)
NC INTERACTIVE, INC:64.25.32.0-64.25.47.255  (US)
Other Servers:
SBL-MAL,secure2-ncsoft.com:199.101.28.20-199.101.28.20
SBL-MAL,secure.ncncsoft.com:69.43.161.174-69.43.161.174
SBL-MAL,ukncsoft.com:208.73.211.152-208.73.211.152
level1
NCsoft:61.152.151.0-61.152.151.255
NCSOFT CORPORATION:63.88.65.48-63.88.65.55
NCSOFT Austin:63.110.21.0-63.110.21.255
NCSoft Corp:64.154.197.0-64.154.197.255
NCSOFT Austin:65.196.167.128-65.196.167.135
NCSOFT Austin:65.200.33.0-65.200.33.255
NCSOFT Austin:65.205.186.0-65.205.186.255
NCSOFT Austin:65.207.130.0-65.207.131.255
NCSOFT CORPORATION:65.213.248.8-65.213.248.15
NCSOFT CORPORATION:65.214.129.248-65.214.129.255
General Corporate Ranges
CMFC Financsoftware GmbH, D-30559 Hannover:195.143.0.140-195.143.0.143
Search results for PlayNC *Used to buy stuff in-game*
level1
store.plaync.com:209.197.69.14-209.197.69.14
Search results for guildwars
Prime
SBL-PROXIES,wowguildwars.com:199.101.28.20-199.101.28.20

I have also attached a typical traceroute (via ping plotter) which shows an approx ping of 140ms.
I am often experiencing high-packet loss (up to 60%) on numerous edge routers in Dallas which seems to cause frequent disconects (on the 64.25.38.X - X) range.

If others could also traceroute/pingplot to these servers it would be appreciated (a number of EU Players are reporting major packet loss and disconnects via Level 3 routers in Dallas).  Packet loss is generally running highest between the hours of 6pm UK -> Midnight.

Thanks,
B2Dust

[#2]

I don't play in US servers but I'm seeing a lot of lag in all games at those times. Not sure how long this been going on as I've been working at these times up until now.
I haven't DC'ed from GW2 in a while but a lot of steam games are because steam losses connection. Some games that use VAC for instance are dependent of steam being online just crash because steam has to log-in by witch point the game has already timed out or a VAC violation has occurred.
Maybe a steam server I'm connected to is hosted in the US!?!

[#3]

Yes - I'm on the US servers.  The lag experienced is packet loss (retransmitted fast packets and fragmented packets) causing lag from wireshark capture traces which I have.  Any suggestions on how to lower the number of lost/retransmitted packets would be appreciated.