As a side note, I think LR 6 is really what used to be called a beta. Here is a trace with a Windows debug utility. Clearly, Adobe is worried about startup times. In the past, this kind of stuff was spat out by the beta builds but not by the release
[11192] ==============================>It took 0.063054382801056 (0.064055979251862 overhead) to make maybeMakeScrollableAdjustmentsPanel
[11192]
[11192] L:
[11192] ==============================>It took 0 (0 overhead) to make makeDevelopOpenNegativeDebugPanel
[11192]
[11192] L:
[11192] ==============================>It took 0 (0 overhead) to make makeDevelopRenderingDebugPanel
[11192]
[11192] L:
[11192] ==============================>It took 0.01000964641571 (0.01000964641571 overhead) to make makeBasicPanel
[11192]
[11192] L:
[11192] ==============================>It took 0.0040031671524048 (0.0040031671524048 overhead) to make makeToneCurvePanel
[11192]
[11192] L:
[11192] ==============================>It took 0 (0 overhead) to make makeAdjustmentsPanel
[11192]
[11192] L:
[11192] ==============================>It took 0.0020016431808472 (0.0020016431808472 overhead) to make makeSplitToningPanel
[11192]
[11192] L:
[11192] ==============================>It took 0.0060063600540161 (0.0060063600540161 overhead) to make makeDetailPanel
[11192]
[11192] L:
[11192] ==============================>It took 0.00900799036026 (0.00900799036026 overhead) to make makeLensCorrectionPanel
[11192]
[11192] L:
[11192] ==============================>It took 0.0040032267570496 (0.0040032267570496 overhead) to make makeEffectsPanel
[11192]
[11192] L:
[11192] ==============================>It took 0.0030031800270081 (0.0030031800270081 overhead) to make makeCameraCalibrationPanel
[11192]
[11192] L:
[11192] ==============================>It took 0.00099998712539673 (0.00099998712539673 overhead) to make makeSyncResetButtons
[11192] ==============================>It took 0.063054382801056 (0.064055979251862 overhead) to make maybeMakeScrollableAdjustmentsPanel
[11192]
[11192] L:
[11192] ==============================>It took 0 (0 overhead) to make makeDevelopOpenNegativeDebugPanel
[11192]
[11192] L:
[11192] ==============================>It took 0 (0 overhead) to make makeDevelopRenderingDebugPanel
[11192]
[11192] L:
[11192] ==============================>It took 0.01000964641571 (0.01000964641571 overhead) to make makeBasicPanel
[11192]
[11192] L:
[11192] ==============================>It took 0.0040031671524048 (0.0040031671524048 overhead) to make makeToneCurvePanel
[11192]
[11192] L:
[11192] ==============================>It took 0 (0 overhead) to make makeAdjustmentsPanel
[11192]
[11192] L:
[11192] ==============================>It took 0.0020016431808472 (0.0020016431808472 overhead) to make makeSplitToningPanel
[11192]
[11192] L:
[11192] ==============================>It took 0.0060063600540161 (0.0060063600540161 overhead) to make makeDetailPanel
[11192]
[11192] L:
[11192] ==============================>It took 0.00900799036026 (0.00900799036026 overhead) to make makeLensCorrectionPanel
[11192]
[11192] L:
[11192] ==============================>It took 0.0040032267570496 (0.0040032267570496 overhead) to make makeEffectsPanel
[11192]
[11192] L:
[11192] ==============================>It took 0.0030031800270081 (0.0030031800270081 overhead) to make makeCameraCalibrationPanel
[11192]
[11192] L:
[11192] ==============================>It took 0.00099998712539673 (0.00099998712539673 overhead) to make makeSyncResetButtons