Hello, your CPU has the same specs as mine and I can easily generate a good sentence in less than 10 seconds with GPT2-Large. So it’s weird. My CPU is an intel though.
Maybe it could be the model type. It would be interesting to try with a GPT-Neo model to see if you get a better result.
What could be interesting is to see the server logs after a generation (a generation with no text). You can find the server logs in the game’s folder. It is named server_logs. Copy the content of this file after a generation (and before exiting the game).