60 Frames Per Second?

[Flavor]

Ordinary Vanity, how did you go about downloading and installing the latest version?

What does it do when it fails for you?

This driver is definitely experimental (especially on the Pi Zero), so in some ways I'm not surprised. I thought it was working well here, though.

To troubleshoot this, maybe...

Set to the default fbcp driver, and then reboot.

If you have a HDMI cable, I'd hook that up. Then you could SSH in to the machine and try running the new driver on the command line.

To make sure that none of them are running:
sudo killall Freeplay-fbcp
sudo killall fbcpZero

Then the internal LCD should stop responding, but the HDMI will continue to work.

Maybe show us the output of
ls -la /usr/local/bin/fbcpZero
Just to make sure it's the latest binary

Then run
sudo /usr/local/bin/fbcpZero

And the LCD should start working again. If not, copy/paste the output here.

Then try to run your emulator or whatever is causing your problem. See if anything comes out the command line on your SSH session. Post it here if there's anything to report.