Lag when moving object

[TishuriUchashi]

@mayoPog

Hey all,

I am new to UE and experiencing issues in UE5.5 when I move objects. My UE just freezes up and I will move my mouse to move or rate the object but it will take about 3 seconds until the actual object rotates. I assume this is an issue with my VRAM as I currently only have 6GB worth on my RTX 2060 card.

However, I experience no lag or anything anywhere else. Is there maybe some optimizations that can be made or should I just save for a new GPU? If so what GPU should I get?

My CPU is a AMD Ryzen 7 5800X and i have 32GB of RAM

Thanks in advance

The issue you’re experiencing in Unreal Engine 5.5 could be caused by several factors. Here’s a breakdown of potential causes and solutions:

1. VRAM (Graphics Card Memory) Limitation

• Your RTX 2060 has only 6GB of VRAM, which can be insufficient for UE5, especially when using features like Nanite or Lumen. These features are very demanding and consume a lot of VRAM.
• Solution:
  • Lower the quality settings in the “Scalability Settings” menu in Unreal Engine. Focus on reducing “Textures” and “Post Processing” to Low or Medium.
  • Disable advanced features like Nanite and Lumen to reduce GPU load.

2. CPU-GPU Bottleneck

• While the AMD Ryzen 7 5800X is a powerful CPU, your GPU might be a bottleneck, meaning the CPU is ready to process but the GPU can’t keep up.
• Solution:
  • Reduce GPU-intensive settings, such as Shadow Quality and Anti-Aliasing.
  • Ensure your GPU drivers are up to date (use NVIDIA GeForce Experience to update them).

3. Scene Complexity

• If your scene has a large number of high-resolution models, textures, or lights, it could be straining your GPU and VRAM.
• Solution:
  • Reduce texture resolution in your assets (e.g., use 4K or 2K textures instead of 8K).
  • Optimize the number of light sources or switch to baked lighting where possible.

4. Unreal Engine Settings and Caching

• Some default Unreal Engine settings might be too demanding for your setup.
• Solution:
  • Disable unnecessary features under Editor Preferences > Performance, such as Realtime Thumbnails.
  • Adjust the Texture Streaming Pool Size in Project Settings to match your VRAM capacity. For a 6GB card, set this value to around 4000-5000.

5. Upgrading Your GPU

If the optimizations don’t resolve the issue, upgrading your GPU might be the best long-term solution. The RTX 2060 is starting to struggle with modern graphics demands, especially for Unreal Engine 5. Here are some recommended GPUs:

• RTX 3060 (12GB VRAM): A good entry-level upgrade.
• RTX 4060 or RTX 4070: More powerful and future-proof options.
• AMD Radeon RX 6700 XT or RX 6800: Excellent price-to-performance alternatives.

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Conclusion

Start with optimizing Unreal Engine settings to reduce the load on your GPU. If the issue persists, consider upgrading to a graphics card with more VRAM (at least 12GB), such as the RTX 3060 or better. This will provide a significant boost in performance for Unreal Engine and other demanding applications.