it logs if it is not paused and the CPU checkbox is ticked at Logging. checkboxes at trace options determine the output, i seem to have only squelch set out of those from some old last time i used this.
the log file grows rapidly while logging, so do not log for longer than like 1 second. so if possible, set 2 breakpoints, one before moment of interest and one after, let the first one trigger, and while paused, set it to log and continue execution until the second one breaks and uncheck. (or 1 breakpoint in game loop)