Diablo II has now become unplayable. My Ping always floats around 200 and whenever I use any command, there is a slight delay.
This had made dueling almost impossible because there is a LARGE delay in teleing (1-3 seconds)

My ping has never been this high and just started acting up recently :S
It used to be around 90.

I used Speettest.net and here are the results:
Ping: 225 ms
Download: 2.04 mbps
upload: 0.57 Mbps

Is there anyway I can reduce my ping?

You can try searching around this "YouTube" typing in its search bar such key words as "How To Speed Up My Internet", "How To Reduce Lag In Video Games", etc.

I use this to speed up my games speed

I can't find the thread, but what you do is you go to notepad, and copy paste this:

FreeMem=Space(64000000)

Then save it as this

RAMcleaner.vbs

Close all your programs, double click it, then try runnin d2 again and lmk if it helps