Icom 7300 and Spectrum Display Question


Lately I've noticed that when clicking on a signal, the spectrum display seems to take a long time to "re-print" the call signs on the display.....sometimes as long as 10 sec but usually 5-7 sec. In the past it would "re-print" in a sec or two.   Using the same computer  with Win 10 and 16 GB of memory  for the last year plus. Could I have changed a parameter inadvertently ?   Suggestions, anyone??

73, George K4GM