2002 WS6 clutch???

2002 firebird WS6, Ram Air 6 speed: I have a strange to me clutch problem. The clutch does not slip on take off, it grabs good and great hole shot however when driving in any gear at any RPM and I step on the accelerator the clutch seems to slip. RPM's race a bit and after a couple seconds the clutch grabs . I have never experienced any clutch problems that did not show up on initial acceleration or take off.

Anyone experience the above and any suggestions or recommendations?