Crashing browser

Hi All,

I have now for 8 months a Huawei MediaPad.

Since the begin of this week, I had about 4 tabs open in the "stock" browser.
Then the browser crashed.
Well I did a restart of the browser, but about a hour later, it crashes again...
Tried 2 other browsers (Dolphin and Opera), but they crash also at 4 tabs opened.

Am I overloading the tablet, of is this an error in the tablet himself...

I hope there is a solution for this problem.

Greetings, Rik
PS. The tablet is fully up-to-date.