Guild Wars 2

Hello, my game crashes a lot a, usually without any precursor (like low fps, or any graphical glitches).
I’ve attached the game log, but sometimes game even crashes and skips the crash stage and goes directly into “The program’s not responding”.
btw it also happens frequently when I open world map or enter crowded places (like Lion’s Arch)

This is my hardware:
Processor Intel® Core™ i5-3450 CPU @ 3.10GHz
Manufacturer Intel
Speed 3.5 GHz
Number of Cores 4
Video Card NVIDIA GeForce GTX 560
Manufacturer NVIDIA
Chipset GeForce GTX 560
Dedicated Memory 1.0 GB
Total Memory 2.4 GB
Memory 3.6 GB
Operating System Microsoft Windows 7 Professional Edition Service Pack 1 (build 7601), 32-bit
Service Pack 1
Size 32 Bit
Edition Professional