Hi. I posted this in ze_surf_vortex_v2_3 but this map suffers the same issue as well. I hope you can update the maps on your free time.
An update for CS:GO recently made some bit of mess that crashed some servers requiring GOTV as a cheap fix or workarounds to fix them. As such sm_precache_particles before a player joins a map can crash the server.
You need to add a mapname_particles.txt (explained here). You did it completely wrong that does effectively nothing using mapname_manifest.txt under /particles/ when it should be mapname_particles.txt under /maps/.
You should update your map to correct this. The command being used is fine but servers will need to not whitelist the command to work around it making it more of a mess on themselves.
But unfortunately it's not playable on some servers I play on and are quite popular, this server being Mapeadores. I noticed that on playing your particles aren't renamed correctly, if you're confused by this check out this link that will explain everything.
Your particle names should be 'custom_particle_xxx' instead of just having the particles named anything.
There was also some commands in the console that unless are used on servers you play on, should be removed as they're not on the bspconvarwhitelist. If you can fix these two that would be awesome and we could play it on other servers. Really nice map, bosses are awesome, idea and textures are also really cool! Can't wait to play it properly! Thanks in Advanced