How To Enable GPU Acceleration In After Effects FIX After Effects Not Using GPU To RENDER
If you've opened Task Manager while rendering in After Effects and noticed your GPU usage sitting at 0% or barely moving, you're not alone.
One of the most common misconceptions among After Effects users is that the software should use the GPU for everything. In reality, After Effects uses a combination of your CPU, RAM, storage, and GPU, and understanding how that workflow works is the key to getting the best performance.
In this guide, you'll learn:
How GPU acceleration works in After Effects
How to enable GPU acceleration properly
Why After Effects may not be using your GPU
How to optimize NVIDIA and AMD graphics cards
Common mistakes that reduce GPU usage
How to verify GPU acceleration is actually working
Let's start with an important fact.
Does After Effects Use the GPU?
Yes, but not for everything. Unlike many modern 3D applications, After Effects still relies heavily on CPU performance for many tasks.
Your GPU is primarily used for:
GPU-accelerated effects
Motion Blur processing
Certain color correction effects
3D rendering workflows
Composition previews
Hardware-accelerated encoding
Multi-Frame Rendering support
This means seeing 100% CPU usage and lower GPU usage is completely normal in many projects. Low GPU utilization does not automatically mean something is broken.
How to Check if Your GPU Is Supported
Before changing any settings, verify that After Effects recognizes your graphics card.
Windows
Open: File → Project Settings
Under: Video Rendering and Effects
You should see options such as:
Mercury GPU Acceleration (CUDA)
Mercury GPU Acceleration (OpenCL)
Mercury GPU Acceleration (Metal on macOS)
If GPU acceleration options are available, After Effects detects your graphics card correctly. If you only see Mercury Software Only, then there's likely a driver or compatibility issue.
Step 1: Enable GPU Acceleration
This is the first setting every user should verify.
Navigate to: File → Project Settings
Under: Video Rendering and Effects
Select:
NVIDIA Users
Mercury GPU Acceleration (CUDA)
AMD Users
Mercury GPU Acceleration (OpenCL)
Mac Users
Mercury GPU Acceleration (Metal)
Click: OK
This allows compatible effects and rendering tasks to utilize your graphics card.
Step 2: Update Your GPU Drivers
Outdated drivers are one of the biggest reasons After Effects fails to use GPU acceleration properly.
NVIDIA Users
Install the latest:
Studio Driver
instead of Game Ready Driver whenever possible. Studio Drivers are specifically optimized for:
After Effects
Premiere Pro
Photoshop
Media Encoder
Creative applications
They generally offer better stability for professional workflows.
AMD Users
Install the latest stable driver from AMD's official website. Avoid using drivers that are several years old.
Why Studio Drivers Matter
Many professional editors notice:
Fewer crashes
Better rendering stability
Improved GPU detection
Better compatibility with Adobe software
After switching to Studio Drivers. If you're primarily editing videos rather than gaming, Studio Drivers are usually the better choice.
Step 3: Enable Hardware Accelerated Encoding
GPU acceleration isn't only used for effects. It can also accelerate exports. When using Adobe Media Encoder:
Choose: H.264 or HEVC (H.265)
Then enable:
Hardware Encoding instead of Software Encoding.
This allows your GPU's hardware encoder to assist with rendering.
Benefits include:
Faster exports
Lower CPU usage
Better multitasking during renders
See how Task manager shows gpu usage when you can enable GPU Acceleration in After Effects
Step 4: Verify GPU Acceleration Is Working
Many users enable CUDA and assume everything is working. It's better to verify.
Method 1
Open: Task Manager - Performance - GPU
Start a preview or export. You should see activity increase during GPU-accelerated tasks.
Method 2
Inside After Effects: Effects with GPU acceleration often display a small GPU icon beside their name. These effects are specifically optimized for graphics card processing.
Why After Effects May Still Not Use Much GPU
This is where many people get confused. Even after enabling CUDA, GPU usage may remain low. That can be completely normal.
Common reasons include:
CPU-Limited Workloads
Many tasks in After Effects still depend heavily on:
CPU clock speed
Single-core performance
RAM speed
Not every operation can be offloaded to the GPU.
Non-GPU Accelerated Effects
Some older effects rely almost entirely on the CPU. In these situations, your GPU may sit mostly idle.
RAM Bottlenecks
If After Effects doesn't have enough RAM available, performance can slow down before the GPU ever becomes the limiting factor.
For modern workflows:
16 GB = Minimum
32 GB = Recommended
64 GB = Ideal for advanced projects
Slow Storage
Disk Cache performance also impacts previews and rendering.
Using:
NVMe SSD
SSD
Instead of traditional hard drives can dramatically improve responsiveness. If RAM limits are causing crashes or failed previews, follow our guide to Fix out of memory errors in After Effects.
Step 5: Optimize NVIDIA Control Panel
NVIDIA users can improve stability by adjusting a few settings.
Open:
NVIDIA Control Panel - Manage 3D Settings - Program Settings
Select: Adobe After Effects
Recommended options:
Power Management Mode
Prefer Maximum Performance
CUDA GPUs
You need to select All or you can also specify any dedicated GPU. Both are good.
OpenGL Rendering GPU
Select your dedicated GPU
These settings help prevent Windows from using power-saving modes during creative workloads.
Step 6: Enable Multi-Frame Rendering
Modern versions of After Effects include Multi-Frame Rendering.
Navigate to: Preferences → Memory & Performance
Verify:
✓ Multi-Frame Rendering Enabled
This allows After Effects to utilize multiple CPU cores more effectively and often improves overall rendering performance. While this isn't GPU acceleration directly, it dramatically speeds up many workflows.
What About raytracer_supported_cards.txt?
You may find older tutorials recommending edits to:
raytracer_supported_cards.txt
This was a workaround used years ago for the legacy Ray-Traced 3D Renderer. Modern versions of After Effects no longer rely on this workflow for normal GPU acceleration.
For most users:
Do not modify this file.
Updating drivers and enabling Mercury GPU Acceleration is usually the correct solution. Using outdated modifications can sometimes cause instability and confusion.
Quick Troubleshooting Checklist
If After Effects isn't using your GPU:
✓ Enable Mercury GPU Acceleration
✓ Install latest NVIDIA Studio Driver or AMD Driver
✓ Restart After Effects
✓ Verify GPU is recognized in Project Settings
✓ Enable Hardware Encoding in Media Encoder
✓ Use GPU-accelerated effects
✓ Enable Multi-Frame Rendering
✓ Monitor GPU activity in Task Manager
✓ Ensure Windows is using your dedicated GPU
Hardware Recommendations for Better GPU Performance
Entry-Level
RTX 4060 - Excellent for motion graphics and content creation.
Mid-Range
RTX 4070 -Great balance between performance and value.
Professional
RTX 5070 / RTX 5080 - Ideal for heavy compositing, 3D workflows, and complex projects.
AMD cards can also perform well, but NVIDIA typically offers stronger compatibility within Adobe applications due to CUDA optimization. If you’re choosing hardware, read NVIDIA vs AMD for Premiere Pro and After Effects in 2026 before upgrading.
Final Thoughts
If After Effects isn't using your GPU, the problem is usually one of three things:
GPU acceleration isn't enabled
Drivers are outdated
The project simply isn't using GPU-accelerated effects
The important thing to remember is that After Effects is not a GPU-only application. Even with a powerful graphics card, CPU performance, RAM capacity, and storage speed still play major roles in overall performance.
For most creators, enabling Mercury GPU Acceleration, installing Studio Drivers, using SSD storage, and ensuring sufficient RAM will deliver the biggest real-world improvements.
Once everything is configured correctly, you'll get faster previews, smoother workflow performance, and shorter export times without changing a single animation.
