Issue with Speech Analyzer Overlay function

Hello to all. I’m experiencing issues on Windows-10 with the “speech overlay” feature of Speech Analyzer (which I use for “Listen-Record=Compare” language practice). Other features of the application work fine (with net.2.0 and net.3.5. installed) but playing the “original” in overlay stutters after a few seconds (playing stops stutters and restarts) defeating the intended use.
Is there a known work-around or could anyone point me to a software (open source or commercial) with the same feature? Thanks in advance for any help