PC performance better than me, on Andoid rather "well"

I installed in the meantime KIS2015 than 20 PCs and notebooks, the installation went smoothly.
For me, none of the installations could not get, as mentioned here in some reviews.
The installation on 5 devices that have a different antivirus previously went without a problem.

Android on the protection is unfortunately often disabled (Samsung Galaxy S4 with Android 4.4.2), the same also on the Google Nexus Tablet with Android 4.4.4 - you can see it just by chance that the protection does not work and needs to restart the app. Unfortunately, that happens regularly so I'll now move to another protection.

I went on all Windows devices as follows:
- Download KIS 2015 from Kaspersky server
- Internet connection is disconnected (pulled network cable to the PC, wireless disabled on laptop)
- Old anti-virus software be uninstalled (KIS 2013 / KIS 2014 + third-party), maintaining registration information at KIS, because of the ongoing license period.
- Restarted
- KIS 2015 installed with the download,
- Registration code as a reserve registration code added thereto.

I could on any PC or laptop find that the speed is slower than in 2013 or KIS KIS 2014. Other anti-virus software slowed the PC / notebook sometimes very, so this was also replaced by KIS.
A scan of an entire PC with "Normal" HDD takes time, but you can continue working alongside. This makes other software different - here the scan (half-time) is faster for the utilization is so high that you can not go alongside meaningful on PC.

The devices were both my private PC + laptop with and the first devices of my employer, the next 6 notebooks are supplied next week with updates. If there are problems of any notebook I will report it here.

Previously (in contrast to other manufacturers of anti-virus software) nor recognized any important software as "potentially dangerous". That I had not have a hoax - not even with various industry software (electricians, doctors, medical practitioners, etc.).

In regard to "Multi Device Security" - unfortunately describes the item description for a Liznz 5 devices and is also the right for 5 Devices option "1 + 2 PC Laptop + Mobile Phone 2" to. Unfortunately, however, only the 3 device to buy.
These cost 2 Android phones as Kaspersky protection just 15.- EUR at Amazon - which makes this version disproportionately expensive. It makes sense on PC and laptop, yes, but when it comes to Kaspersky Mobile protection, then that's effective.

Addendum: negative attention so far is me only the "Secure Payment" I could not turn it off in Firefox, even if it was turned off at KIS itself. Problem was with me - I could not perform more Paypal. Only the deletion of the plug-ins in the Registry disabled secure payments. Thus, the 4 star is just something in danger, if I find even more things that review is completed