Oh, sorry, I'm not talking about the standalone, just the browser version which has been recently added, this one here:
https://www.warlight.net/ChangeUnityWebGLI'm running 64 bit Windows 10 and it's a new laptop, the flash version runs fine, no problems even on large maps. But with the browser version of Unity it runs very slow, sounds similar to problems others are also having.
The Netflix example only occurred since changing to 64bit Firefox, again it ran fine on 32bit.
Hope that helps give more context Dan :)