Hi Azeddien,
Yes GetStatus will be faster. The problem you are having is because whenever you request more than one line of response from KFlop you must first Lock the board by obtaining its "Token" so other commands and responses can not occur while you are receiving the lines and then Release the "Token" after you are finished. See:
Another example of this is in KMotionCNC. Search the source code for the usage of
int CKMotionCNCDlg::GetStatus()
I hope this helps
TK