Does this page seem to eat CPU resource on loading?
I have noted that when opening this community page in Chrome (haven’t tried other browsers as yet) the CPU utilisation of my machine goes quite high I’m running an an Intel® Core™ i7-5500U CPU @ 2.40GHz, 2394 Mhz, 2 Core(s), 4 Logical Processor(s), in WIndows 10, Chrome 45
Looking at the developers tool, and running a CPU Profile, I think suggest that some JS script of the page are running a muck, although I am no developer, so don’t really know what I’m looking at here.
No problem with Firefox and Chrome on Linux. Anyway we should update NodeBB soon. It may fix your issue.