I've had serious issues with Kaspersky and SED, too, esp. severe slowdowns, typing one character took several seconds. Deinstallation of Kaspersky did not fix the problem (for me), SED will continue to stay slow.
I've had to re-install Windows twice (or three times) to isolate the cause of the slowdowns and to make sure it's really the installation of Kaspersky.
Contacting Kaspersky's support is useless, they say that's impossible or it's Conitecs fault.