This doesn’t happen if I click like crazy. So I don’t think it has anything to do with the game client.
Looks like you have some peripheral software causing issues in the background:
Update the LG Hub software or reinstall.
This is not a great sign unless you ended the test early.
Try disabling this from running on startup.
Btw, I tried to help you before, but you didn’t respond with any diagnostic files. It’s important to follow the troubleshooting steps if you want to resolve this.