Hello,
I have tested two LimeSDR mini’s ( Side by Side Comparison of two LimeSDR Mini’s ) and found one of them shows the same behaviour using SDR Console as to what you have described, whilst the other seems to work perfectly all the time.
I have then done some testing with HDSDR and both the LimeSDR mini and they both seem to work fine, so I would suggest you give HDSDR a go and see if your LimeSDR mini works better. Search this website for information about setting up HDSDR using ExtIO to connect to your LimeSDR.
Have not yet been able to explain why the two units behave differently to each other with the same installation of SDR Console.
Hope this helps
Bevan
VK5BD