It's not the ram at this point, all of the OLD ram is out of the machine. I believe it's the hard drive now. When playing the game, It will freeze up and then a TICK noise will come from the hard drive, or so I think thats where its coming from. Then it will unfreeze then repeat. I am in the process of replacing the hard drive with a new one that has a WAY higher RPM
If somebody else can monitor the HDD led while you play, it would be great to relate the freezes to the HDD light. If the game requests something from HDD and it cannot provide the data, then freezes can occur. However, please also check for HDD SMART monitoring utilities. They could also place the HDD in such a "delayed command" state. BTW, how long are your freezes compared to the video?