I'm using TrackIR 5 with the Track Clip Pro, the thing that clips on your headset, with the yaw, pitch, X axis ,side to side, and Z axis, front to back enabled.
Enable, Toggle, Trap, on. Roll, Y axis, up and down, True View and in game TrackIR relative view off. Have not tried saving and deleting the .hps files.
Getting the 180 degree flip when changing from internal to external in snap mode and the .5 second delay when pausing TrackIR.
Just checked this offline. With defult to instant view selected in view options I do not get any of the 180 degree flips when changing views or
pausing TrackIR and appears to be working fine in this mode.