First of all, wrong forum section. I'm going to assume this is for GoldSrc, because Source doesn't have r_speeds.
Second of all, post the map in the map vault with an RMF and link to it here. I don't see any other way people will be able to help you. Your problem seems tied to they way you built your map, and it's far too hard to troubleshoot this kind of thing when you can't see first hand how it's made.
The only thing I could ask with the information I have now is whether you're you're running VIS.