HaloMods "Classic" Read-only Archive

Does anyone know of an alternate, less computer-taxing version of the sbsp viewer in Entity? When I go to pull it up, it takes forever to load and when it does, I cannot use it because it's frozen. Is there any way I could take down the detail level or find an alternate that might work?

Darkmatter is like an earlier version of Entity, it's a bit less demanding, but has far less features. Darkmatter.