У вашего броузера проблема в совместимости с HTML5
There are a lot of ways Hammer/Worldcraft's geometry tools make it better for level designers than UE4 (see my previous videos). Now you can use Hammer with UE4. Best of all possible worlds.
Author's twitters (got one of them wrong in the video, whoops):
https://twitter.com/TurfsterNTE
https://twitter.com/hammUEr
My twitters:
https://twitter.com/joewintergreen
This really should have been 60fps instead of 24, but it was my first time making a vid with Davinci Resolve and I ballsed it.