This is the only information I have been able to find.
https://wiki.debian.org/rt2800pciI am unsure if it would work to use the commands it says, on Linux Lite, and I don't wish to make your wifi issue worse.
There is also a way to install update firmware from the command line, but I am also unsure about this.
Hopefully someone else has ideas?
I did notice from Google results that this driver has unsolved issues for connectivity, crashing, slow speeds/disconnects on Ubuntu forums, Linux Mint forums, and Manjaro forums, if this saves anyone some time looking about it.
Edit -
I just thought, after installing Linux Lite, have you checked for updates yet ?
Menu>Favorites>Install Updates.
Also can you try (in case it picks the driver up) -
sudo apt-get update
sudo apt-get dist-upgrade