Lag when moving object

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 :slight_smile:

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Is this a problem for all actors, or just some specific ones? Do the actors you move have a Construction Script? It usually causes this problem.

I’ve had an issue with UE5 hanging periodically for a while. I disabled the Studio Telemetry plugin, see this post

https://www.reddit.com/r/UnrealEngine5/comments/1fklb7l/ue5_freezes_every_few_seconds_it_didnt_happen/

That did fix it, although I don’t know if this is your problem… Also possible some UDP stuff

And I’ll add, after seeing that somewhat misleading GPT answer, that your setup is fine for now. GPU 6 GB is quite low, but you should be able to function fine on basic levels. You’re not going to be manufacturing huge PCG landscapes, but the example maps should be fine. You may also have to restart the editor after auditioning new textures and materials ( because of running out of VRAM ).

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.

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.