I recently set this up for a company but since then their internet seems to behave very strangely.

I have the following rules configured on the router...



A little information about the rules...

Rule#1: Make sure all online backup is done over WAN2.
Rule#2: All users browse the net via a proxy on 192.168.25.15. The rules makes sure all their traffic goes over WAN1.
Rule#3: I am uploading a huge amount of data from 192.168.25.1 which is why I have told it to upload all data over 443 (HTTPS) over WAN2.
Rule#4: Make sure all outgoing SMTP is over WAN1.

I'm pretty sure the rules are working but my problem is when I change the router to enable the secondary WAN port ("On Demand" to "Always On") and start uploading. Everything seems to slow right down. All traffic over both connections performs worse than a 56K would. Remote access over HTTPS to the router is also very slow again on both connections. To the point where pages can't load.

Its as is the router is somewhat being over worked. I cannot test how the router behaves to loading its config pages locally as I am working on this router remotely.

Can anyone see anything wrong with my rules?