Step 1

You need to first disable System Integrity Protection (SIP) from the Recovery volume.

Start the computer and keep holding Option key (ALT on Windows keyboards) until you see a boot selector.

Choose Recovery volume from it (macOS version number doesn't matter).

Step 2

Click Utilities from top bar, then choose Terminal.

Step 3

Type csrutil disable and press ENTER.

Step 4

Click Apple logo from the top bar and choose Restart to reboot the computer in normal mode.

Step 5

Click Apple logo from the top bar and choose About this Mac, then click System report button.

Click Software from the list and ensure that System integrity protection is in Disabled state.

Step 6

Download and install the latest driver for your macOS version and build from our drivers page: https://www.macvidcards.eu/drivers

If you see a warning that it cannot be opened you need to unblock it in System Preferences - Security & Privacy pane.

Step 7

Open Terminal by clicking Go, then Utilities from Finder menu. Then double-click Terminal icon.

Type a following command in Terminal window (all in one line):

sudo nvram boot-args="nvda_drv=1"

Terminal will ask for password. Type your user password and press ENTER (password won't be shown not even under asterisk).

If Terminal shows an error:

nvram: Error setting variable - 'boot-args': (iokit/common) general error

this means SIP is not disabled.

Finally just reboot the system and NVIDIA Web Driver should be now enabled.

If your dock is translucent and there is no flickering anymore this means acceleration is working properly.