Vis-blocking on this map is bad because it's quite open, so a lot of geometry needs to be rendered.
That's what causes the jerkyness.
A fix would be to change the layout or add vis-blocking geometry.
As i won't rework it (i never really liked how the map turned out at all) i suggest to replace it with another one or just don't play it if you don't want to
But i think it plays great in minstagib.
hrm... i need to get some sleep.....
bleach->aneurysm->straledm5->dieselpower->space-fun->o-fun->runningman->runningman1on1->aggressor(conversion)->soylent->bloodprison->bluesky->ruiner->reslimed->strength