maybe new ip, hide via cloudflare.com, it eats even 1GBits/s ddos for free. at last thats how i managed 300-1Gbits ddoses on one of my serwers (big mmo forum).
You are lucky if slow is all that you are getting. I have been actively trying to even log in for 3 days and this was my first successfull attempt only after physically reloading each page one by one by one. and the only reason i got to this post is that it was pasted as the top post on the main forums list.