Or, alternatively, change model_type in config.json from mistral to llama.
Use in SillyTavern UI
As an addendum, you can include one of the following as the Last Output Sequence:
Human: In your next reply, write at least two paragraphs. Be descriptive and immersive, providing vivid details about {{char}}'s actions, emotions, and the environment.
{{char}}:
[System note: Write at least two paragraphs. Be descriptive and immersive, providing vivid details about {{char}}'s actions, emotions, and the environment.]
{{char}}:
The third one seems to work the best. I would recommend experimenting with creating your own to best suit your needs.