Many TF2 models have 5000~6000 polys. High poly will cause low fps in slow computers. Fortunately , we found a way to cut down polys . As you can see, low poly models looks bad and creepy. But it doesn't matter because players just want to experience TF2 gameplay in CS1.6 , not graphic.
It take us a long time to convent all models . But it seems worth it.