I've now ported the game over to UndreamAi's LLM for Unity (https://github.com/undreamai/LLMUnity / https://assetstore.unity.com/packages/tools/ai-ml-integration/llm-for-unity-2736... ) which makes it compatible with (hopefully) all modern PCs. The previous NobodyWho version just didn't work on a number of CPUs.

The switch does make the download size larger as it includes DLLs for more system architectures. Interestingly, I've had no stability problems when working on this project so I can only assume that my previous issues with LLMUnity were due to my own implementation of its code case.