Template with browser crashes on many threads

[Merciless]

Hello,

I have problem with templates that using browser. When i run this template with one or two threads, everything is fine, template ends successfuly. If i set more than 3-4 threads on this template, every instance crashes, none of running threads finishes his job successfuly.
Could you tell me why this happens? The problem is with template or my machine performance?

My PC:
i7 4gen
16GB RAM

Thanks!

 

[EtaLasquera]

Can you tell your memmory usage for each instance after that time working?

 

[Merciless]

Thanks for the answer.

there is 10 threads running.
usage of each instance looks like that: