Alright, so this patch is pretty dang important. Performance has always been really spotty on this map, and without much understanding of the how/why/where of placing occluders and areaportals, I was stumped. Hit up Aar, and boy did he take my map as a challenge, lol. There's areaportals and occluders, more details and less brush/prop congestion. We've gone from 1400 ents to 1000 ents with his help (thanks a bunch, can't be said enough).
If performance is still bad, he'll give grouping things together via Propper a go. Otherwise, enjoy the map with some improved frames!