Due to the fact that unlike many respectable and honest developers who allow users to see when devfee process begins and ends, I suggest the following:
Block dev2.teamredminer.com within your router and then launch this software.
Check your routers documentation to see if this feature is available. If not, you can always get a cheap Pi and install Pi-hole to block it.
Sure, you will be mining at a little slower rate but its worth it because you might have been losing a lot more!
FWIW, I am aware of at least 2 groups on github who have expressed their interest to investigate this software and make it much cheaper to use.