# What could go wrong? ### What are the downsides of using Blueprints instead of writing C++? * **C++** is always **faster**. Blueprints use **Virtual Machine**(**VM)** to translate functionality to C++. * If you have a Blueprint that's doing a lot of operations and complex **math every tick**(frame rendered), you might want to consider using native C++ functions instead. * Blueprints are a set of functionality that is made available to you in the visual editor. You can write anything that is not available to you as Blueprints, using C++. * Blueprints use object references, it is possible to have a **circular dependency** in your blueprint code. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://www.xrdev.app/mixed-reality-docs/mixed-reality-using-unreal-engine/blueprints/what-could-go-wrong.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.