Low performance web browser

Sorry for my bad english ( using translator )
I ran into a problem with the low performance of an experimental browser in the game.
The idea of my project is that the browser shows google maps in the game.
And its shows , its OK , but when im trying to move (in google maps 3d ( google street view) ) its laggin .
Iam beginner , but im thinking its not the fault of internet connection , it seems like its lagging because due to lack of computer resources (ram, cpu ) . But i have i7 7700k and 16 gigs of memory , so icant imagine what will happen on low performance computer . Thank you for answering me.

That might be WebGL issue which Google Maps uses, it seems like webbrowser widget even thru it raports that it support it does not run WebGL, i checked it at http://glslsandbox.com/. So Google Maps fallbacks to HTML5 canvas mode

You also need to keep in mind that UE4 uses raw Webkit HTML renderer and it has no high performance JS engine like V8 in Google Chrome, so JS heavy websites will perform a lot less in it.