Is there anything malicious with play support libraries?
What are the Android Support Libraries?


  The Android Support Library is a set of code libraries — resources that can be used to build features and/or functions into an app — that provide things like features or widgets that would normally require an actual Android framework API to include in an app.


The article goes on to state that:


  There are generally two types of support library packages. One set enables features of new versions of Android on devices running an older version and the other provides standalone features for all versions of Android. Because these aren't part of Android proper, they can be improved and updated without waiting for a major Android platform release.


Why are the Android Support Libraries important?


  we don't have to wait for the next version of Android to get an update if a feature is provided by the Support Libraries. This allows developers to add and improve how their apps work, especially on phones that don't run the current version of Android, whenever the libraries are updated.


Your device is not infected by a virus or something else. It is just Google deciding to update your device (even when did not want the update to add more features).

That said, on this thread from Google, there are other users who have noticed lagging the first few minutes after the update.

Source: What are the Android Support Libraries and why are they important?