I don't have razor cortex but from what little i have looked at about it is is gaming software thing very much like the nvidia experience software I have on my pc that lets you launch your games from THEIR software and also configures games for "optimal" setting if you let it.
The only way to "boost" your game is if the software is doing some kind of changes to increase your overclock to your video card or something of that nature like you can do with the MSI gaming app etc.
Disable the cortex stuff so that when you do start GW it doesn't do any kind of changes to "boost" your game.
Anyways the best thing to do especially in older games like this is google for similar problems or send a ticket for help and include a dxdiag.
Also take a look here
https://support.guildwars.com/entrie...rs-Error-Codes
You can also take a look and see if there's a crash.dmp or arenanet.log file in your guild wars folder which might help pinpoint the problem beyond this there not much I can help you with.
I just started playing the game again after many years so I am not really familiar with problems the game may have that pop up now and then.
EDIT:
Try taking a look at this thread here
http://forums.evga.com/GW2-Hardware-...-m1568554.aspx in this thread the one person had the same problem in gw2 AND previously in GW and he manage to get around it via changing the command line used to start the game.
Go to the GW icon on your desktop right click it and click on properties. You should see something like this in the shortcut tab in the target box
"C:\Games\Guild Wars\Gw.exe"
this is the command line which is basically what a icon or shortcut uses to start programs they are used for. Mine originally looked like this
"C:\Games\Guild Wars\Gw.exe" -mce
I took away the -mce as this was causing windows media player to start up, after closing the game client, and give an error as I don't use that program.
Here's alink to command line argument for gw
http://wiki.guildwars.com/wiki/Comma...ents#-password