The problem is related not only to the vector example. Any example with more than one layer or any overlays will most likely crash in about ~10 sec. extensive of use - zooming in/out, scrolling, rotating. Using it carefully is possible though it's a very painful experience.
I'm making the tests with the Chrome browser. I have also tried the PhoneGap app with my own app that has some short route on the vector layer. It's also crushing.
Trying it on iPad2 brings moreover the same effect.
Cheers and thanks for your effort!
Thanks for the bug report. Which Android device and browser are you using?
B&N Nook Tablet
Android : 4.1.2
PS. In the PhoneGap it was running out of memory very fast and that was the reason of the crash. So the crash it in the browser would be for the similar reason I guess.
We discussed this at today's hangout, and identified some options for improving performance:
Good summary Tom. Thanks a lot!
@szymonc, can you re-test this with the latest master?
Closing due to lack of response.