I've been having trouble connecting to the server lately. Whenever I try to connect I get ridiculously slow download speeds. It would take 10+ minutes to download a small map. By the time I enter into a game, it's already rtv time.
Whenever I restart my router and get a new ip address, the download speed is great, and only takes a couple of minutes (if that) to connect to the server. However once I enter the server, subsequent connects slow to a crawl again.
I turned to downloading maps through https://fastdl.nide.gg/css_ze/maps/ but the same issue happens. I can download all the maps (using a custom script that checks already installed maps against server list), and I can download decently fast. However once I connect to the server, it's as if my player name triggers a connection throttling on my current ip and fastdl throttles my connection. I don't know if this is what is happening, but it appears that this is the case.
The solution to my problem is not ideal. I basically restart my router, download the maps that I need, and make sure to set the multiplayer option 'only allow map files' in-game. If I check 'allow all custom files from server', I will be stuck downloading materials, particles, etc. at a slow speed (around 2-20 kbps). Particle effects are obviously essential, so this solution isn't a good one.