Wallpaper flickering I've noticed after updating to the latest OS X update 10.10.3 my desktop wallpaper flickers frequently.

The flickering will momentarily go if I have a window cover the location of flickering but it will appear again about 10 minutes later.

Could someone tell me how to resolve this? or at least troubleshoot the issue.

I have a Mac Mini (Late 2012).

UPDATE:
Screenshot of my console as requested:


2ND UPDATE:
Added screenshots of my screen settings and new console log.
Thanks for the Console log:

I see two item making problems with the User Interface (UI) in (WindowServer)

One is the VLC.app and the second one is the "Transmit application"

I know what is VLC app, so just disable (remove) it to test. (then download updated version)

Second one "Transmit" you know what it supposed to do but it is making problems. See if there is an update  or disable it.