Guild Wars 2

I dont know if this is just me, or known issue, can’t find anyone else that has written anything about it:
When I open the BLTrading window and goto the third tab on the side of the window (Trading Post), the game instantly start to use more ram (~300mb), no big problems with that, I have ram, but one of the cpu-cores goes to 100% and the cpu-fan starts since the cpu temp is increasing of this.
This behavior stays until I port to another zoom or change character.

It has also sometimes, when I was using the Trading post, some kind of high-load-problem making the GW2-processe freeze and Windows (8.1) marked the Window as "Frozen" and asked if I wanted to kill it. Waited some more and it unfroze again...

Computer: Asus ROG G750JH (i7@3.4ghz, 8gb ram, GTX 780m)

Okey, this is even worst then I first imagined!

I lost actual game progress, and have lost items I earned, when I do stuff after I open the trade window.

For example:
* I bought 4x250 runes to convert to superior runes in mystic forge, to get the golemancer runes without correct currency actually.
* I sold the none-account-bound superior runes in Trading Post and put the rest in bank. I made some gold by this.
* Then I logged out since the game ran wild in CPU-usage, logged back in and found out I lost my gold I earned, lost my account-bound items I earned, lost the items I sold, the time I spent dubbelclicking and got some runes from first trade back again in 250-stack.

How can I lose over half an hour of gameplay, gold and items like this? I bet there is some connection to the cpu-spike and increase of memory-usage.

Can you in some way fix this, I dont wanna buy items in trading post again or spend gems if there is a risk I lose my items and currency