A heads up for those using Dr Web on Win 10.
I disabled Windows defender before installing Dr Web and all seemed well. However, after a few days I noticed that there was high CPU activity, checked Task Manager and found that Windows Defender was updating; it had re-enabled itself!!!
Apparently it can do this. To disable permanently take a look here; http://winaero.com/blog/disable-or-enable-windows-defender-in-windows-10/.
I used Option 2, NoDefender.