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#71
At this state, yes, I would think you should terminate TestDisk and try anything you may want to. As MaloK opined the bad sectors may be dragging your drive to the sluggish response. When you close TestDisk, just run Hard Disk Sentinel and check the state of affairs. Has it deteriorated further?
GetDataback has four levels of scanning. I doubt it will even run the first level scan fast. On a drive with no hardware fault but file system corruption, the first level scan result will be almost instantaneous. Level Four will take hours.
After GetDataBack, you may also try Disk Genius as suggested by steve108.