Re: Submerge map
If I may, you seem to use a LOT of sprites, I noticed all the windows have volumetric light (I think) and I was wondering if you are using lod, hints, areaportals, etc. because that would help people's performance. Also taking out some sprites maybe.
btw, I have a texture that looks like light reflected off of water, the only problem is that it doesn't move. If you want to try and animate it or if someone here can then it should work for your map. As for refraction, I think there might be a way to make a vmt do that.