Pages not opening properly

[omomom]

Hello, I'm using stock browser and I noticed that pages do not load properly, especially facebook mobile page ( I don't use facebook app because I don't like it). Either the page gets half loaded or images are missing. I have used chrome and mozilla for some time but those apps were really lagging on my phone so I uninstalled them. I am using huawei ascend g510 running on android 4.1.
I don't know is it OS's fault or something else.
here is a screenshot

 

[Rukbat]

Does any other browser work? If one does, it's not the phone's fault, it's the app's fault.

 

[omomom]

it does work on chrome and mozilla...I will try opera, maybe it would not lag as much as chrome