weird graphics issue

Good time of the day!

Installed Sierra, everything seems to work normal, except the graphics.

My platform:
Philips 23" monitor
GA-h97-d3h
i7 4770
8 GB RAM
1 TB HDD (7200)
GeForce GT 730

installed, sierra + clover 3773,
installed Nvidia Web drivers for 10.12 (v. 367.15.10.05f01)
added <key>NvidiaWeb</key><true/>

after booting i get the errors seen in screenshots attached. (the video card is recognized as it should be)

Please, someone point me to a direction, to solve this issue