Client Locking Up Only On Office Connection

[starsz]

Strange one here:

 

My Laptop has issues when playing at the office, after around 10 mins it will micro-stutter, which within about 30secs get continually worse until I have complete lockup on the client (cant interact with the client at all, like its crashed). This happens on both the Wifi & and wired.

 

However at work, when I play on my Surface 2 at work, its works fairly well (little laggy due Wifi).

 

Using my Laptop at home howerver it works perfectly ok (played for about 4 hours last time, and no DCs).

 

At work we use netgear switches in a Sonicwall firewall, and a samsung Wifi controller, at home I just have a Draytek 2820 router.

 

Any thoughts would be great!