Interesting, can you elaborate on what you mean by streaming? From where to where?
Many games stream textures and data on the fly while you are playing. Usually you won't notice it if it is done right but sometimes if you have a bottleneck or perhaps just a driver acting up the streaming process gets slowed down causing blurred textures or stutter if the game has to wait for the data before it can render the next frame.
Funny thing people say that a harddrive or SSD cannot cause a gain or loss in FPS but that is actually not true in every case. Have seen this firsthand a few times now.
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