you have a low signal quality, that can severely impact your download speeds and ingame lag.
also, lag is often caused by your graphics card not being able to handle the settings you have on, i occasionally get lag even even with my NVIDIA GTX 460 2GB video card
what operating system are you using? if you are on Windows Vista, you probably will never see a download speed faster than 200 kb/s, but if you are on Windows 7, you should have a DL speed of 600-2000kb/s
what country are you in? the distance between your country and the server can also affect your lag ingame, i think this server is based somewhere in central europe, cuz if im not wrong, its timezone is GMT+1
would you be able to post what hardware you are using in your computer? that would greatly help the community to give you better support.
the highest download speed i have had on my computer is about 2300 kb/s, and the average is about 600-900 kb/s (Windows 7, AMD Phenom II x6 1100T processor, 8GB DDR3 RAM)