website download issues

15 pts.
Tags:
Cisco
Load balancing
Max hop
snapgear
TTL
Website
I have a uk based network which is having issues downloading content from websites based in USA, but can download content from the UK without issues.  Different browsers/pcs also have the same issues.
We can ping and resolve the website addresses for any sites.  

The site was working for several years and the ISP claims its not their issue as they are testing the routers they supplied say everything is ok. 

The internet connection is provided by 4 adsl lines bonded together to two sets by two cisco 1900s then these are load balanced by a Snapgear SG560 (which is old but we tried replacing with a SG565 and still had the same issues)

Could this be a TTL or Max hops setting on the ISP's network? 
If I trace a uk site it resolves with 10 hops, whereas if I trace a us site (ie xe.com) it resolved with 12 hops. 

As you will imaging the users are getting fustrated and every site looks at google even to tracking so causing delays on almost every site.

Any suggestions gratefully received.

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  • it4offices
    After some further investigation,I reduced the MTU settings on the router to 1400 from 1500 and websites are working again.  Could this issue be caused by the line quality or something on the ISPs core network?
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