HP-41C keyboard less reactive in USER mode?

[Hans Brueggemann]

that is normal behavior when your calculator's program pointer points to somewhere in a large PGM. then, your HP-41CX is trying to find labels LBL A .. LBL E and labels LBL a .. LBL e, which are automatically associated with the top row keys. to get rid of the delayed response, do a [GTO] [.] [.] to go to the .END. of the program. that should fix it.