Performance Testing of Unreal Blueprints vs. Unity Visual Scripting

Overview

• Conducted performance testing comparing Unreal Blueprints and Unity Visual Scripting.
• Recreated tests for Unity in Unreal Blueprints.

Key Findings

For Loop Performance

• Unreal Engine Blueprints: 5 times faster than Unity Visual Scripting.
• Both are significantly slower than C#: almost 100 times slower than a For Loop in C#.

Addition and Multiplication

• Unreal Blueprints are almost 10 times faster than Unity's Visual Scripting.
• More efficient input values for nodes in Blueprints compared to Unity.

Overall Performance Comparison

• Most operations in Blueprints are 5 to 10 times faster than in Unity Visual Scripting.
• Notable performance issues in Unity with:
  • Paralleling Noise
  • Random Numbers
  • These operations are slower due to Unity using calls to C# for these functions, which is inefficient.
• Unreal Blueprints do not encounter the same performance issues for these operations but are still around 10 times slower than C#.

Conclusions

• Unreal Blueprints were expected to be closer to C# performance but results show they are still slower.
• C# and C++ provide the best performance for games with many characters and complex operations.
• Unity has room for improvement in Visual Scripting performance.

Final Note

• If performance is critical for game development, prefer using C# or C++ over visual scripting solutions.