Not bad - but slowly

1. Start System
Compared with other products (eg Norton) doubles the time to start Windows.

2. Time for a full system scan
Norton 360 required for complete examination of my system just under 2 hours.
KIS 2015 needs for more than 5 hours.

3. System capacity
KIS 2015 overloaded the CPU (XEON E3-1230v2) made during the system scan at up to 50%. This may Norton significantly better.

4. information about installed programs
Here KIS 2015 can definitely score.
This gives very good explanations why a program should be rather installed in a new version. eg Photoshop Elements is uncertain up to version 9.

Overall, you get a clear program with multiple protections.
Unfortunately, this also goes but at the expense of performance.
Therefore KIS 2015 from me gets only 3 stars.