I'm on 8700K, High Sierra 10.13.3 (specs in my signature) and had the same graphics lag issue with web driver version 387.10.10.10.25.156. I managed to fix it by installing older web driver version: 378.10.10.10.25.104.
The way to install an older version of the web driver on a later version of MacOS is to first find the URL of the web driver and then use a command line tool called
webdriver.sh to install it. You can download webdriver.sh from
here or install it via
homebrew. Nvidia has a
page that lists web drivers per MacOS build version. In case of .104 on MacOS 10.13.3 (Build 17D47) you need to execute the following commands in Terminal:
sudo webdriver.sh -u
https://images.nvidia.com/mac/pkg/378/WebDriver-378.10.10.10.25.104.pkg
sudo webdriver.sh -m 17D47
Once that's done, restart your computer.
If you already have a newer version of the web driver installed, you can use the tool to uninstall it like so:
sudo webdriver -r
And restart once it's done.
How to find your MacOS build number? Go to About this Mac -> System Report -> Software. You'll see it listed there under system version. It shows macOS 10.13.3 (17D47) in my case.