I have been using a security camera software for a long time but the last 2 months I have been having audio and video issues and latency monitor software is pointing to my NVidia and realteck audio drivers. I have been updating them from the EVGA website but a driver scan shows them as way out of date.

what is the best way to keep the drivers updated? 

Nvidia driver - get them from Nvidia directly
 
If you load the sound driver from Nvidia, loading sound drivers for your MB - Might cause conflicts, best to choose only 1 sound driver for your PC