Within the past few weeks  I have experienced multiple lines in the waterfall of the same signal, many .  Sometimes 50 or more . If I stop the waterfall and restart it, everything will be fine for a few minutes and then the problem will reoccur.  It is most prominent on a loud signals.  I have this situation on two different Windows 10 computers that has not previously had problems like this for years, Another ham is also experiencing this.  Any one else ?

One machine is a desktop AMD  A8-5500 3200 Mhz  2 core and 12 megs RAM.  The other is an i5 laptop 1.8 MHz, 4 core ,  8 megs RAM. 

Andy K3UK