Why does SteamVR recommend 64 bit standalone builds? (Unity)

[ttakala]

The SteamVR Unity addon (version 1.1.1) recommends 64-bit standalone builds. Why is this? Are there some issues with 32-bit builds, like lower performance or stability?

I'm doing an an application that is intended to work without VR as well, and I'd prefer it to be a 32-bit build.

[aaron.leiby]

Traditionally, we've seen better performance with Unity 64-bit since v5.0. The suggestion is mostly there to catch when Unity defaults to Web platform, and then scripts fail to compile due to different C# runtime restrictions, and since we have to pick one, I chose the 64-bit version.

[ttakala]

Thanks for the clarification Aaron.