# How to view and optimize graphics card usage?
### View graphics card usage
* Open Task Manager - Performance - GPU - View Dedicated GPU Memory Usage
GPU
* Windows' own video memory detection data may not be accurate, we recommend using [GPU-Z](https://www.techpowerup.com/gpuz/).
> Detecting the sensor - memory used parameter can help with better video memory management.
{% hint style="warning" %}
If your dedicated GPU memory usage has reached 80% and above, the core advantage of the graphics card has decreased and will be in an unstable state; at this time, D5 may lag or render slower, and there may be pop-ups reporting errors or flashbacks.
{% endhint %}
***
### Optimize graphics memory usage
The following settings are available for optimization：
* Start D5 Render with administrator privileges and restart your computer. The program will automatically modify the TDR values, which can improve the stability to a great extent.
* Turn on DLSS.
* Depth of field, Tyndall effect, and other settings can take up a lot of video memory, so use your discretion.
* Higher resolution mapping will also take up video memory, you can replace the mapping of materials farther away from the camera with a lower resolution mapping and try to avoid using replacement.
* More reflective scenes will reduce efficiency, you can turn the specular of materials far from the camera to 0 to cancel the reflection.
* Windows' own GPU usage data may not be accurate, we recommend using [GPU-Z](https://www.techpowerup.com/gpuz/). Check the sensor-memory used parameter for better memory management.
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