Update README.md

Author: jmafoster1

README.md

@@ -52,6 +52,10 @@ pip install . # For core API only
 pip install -e . # For editable install, useful for development work
 ```
 For more information on how to use the Causal Testing Framework, please refer to our [documentation](https://causal-testing-framework.readthedocs.io/en/latest/?badge=latest).  
+
+>[!NOTE]
+>We recommend you use a 64 bit OS (standard in most modern machines) as we have had reports of the installation crashing on some 32 bit Debian installations.
+
 ## How to Cite
 If you use our framework in your work, please cite the following: