If the problem is in EA Studio, the browser will print an error. The browser is designed in a way that prevents user programs to lead to a crash. The maximum that can happen is the tab to freeze. If it happens the browser shows a note.
Please test it without the additional parameters. Try also Firefox.

hi it look like it was a chrome problem. after thread openening chrome have make update and now it works without a crash again

The only way to have an idea of what can be the reason is to post errors from the browser's console.

It must not have a difference if you use EA Studio for a day or 10 minutes. If you can reproduce a bug or to find an error message, we will be able to fix an eventual bug.

i have crash again but nothing is written in console.

It must not have a difference if you use EA Studio for a day or 10 minutes. If you can reproduce a bug or to find an error message, we will be able to fix an eventual bug.

i dont know why it is sometimes i can run 10 instances for 7 days without any crash.

Now i use 6 instances and it crash after 1 day.

Why it is so is it cause update from eastudio?
Also i use Chrome with this comand line

"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe" --args --js-flags="--max_old_space_size=4096"

But why it works sometimes very long without crash and sometimes i get crash everytime?