Fixing NVIDIA Broadcast 2.0 High CPU Usage: The 5A06B Hex Editor Workaround
When it comes to noise cancelling, I rely heavily on NVIDIA Broadcast. It’s basically magic for filtering out my loud mechanical keyboard and the occasional dog barking during my meetings. But after I updated to version 2.0, my PC started acting totally bizarre. I was losing my mind trying to figure out why my cooling fans were screaming while I was just staring at an empty desktop.
Turns out, I wasn’t alone.
The Problem: The 2.0 Update is a Resource Hog
If you open your Task Manager right now, you might notice NVIDIA Broadcast chewing through your resources. Users all over the community have been noticing their CPU utilization randomly spiking by 30% to 40% just from having the app running quietly in the background. And it’s not just the CPU. Some gamers have reported losing up to 20% of their frame rates on incredibly powerful cards like the RTX 4090 when using raytracing, all because the noise removal background task is freaking out.
Add to that a weird memory leak where the app randomly hogs around 700 MB of RAM, and you’ve got a recipe for a really frustrating update.
The craziest part? It seems like a huge chunk of this processing power isn’t even going toward the actual AI audio filtering. The app suffers from a broken user interface rendering loop. Basically, the software’s visual UI is constantly drawing and processing in the background, locking up your system even when it’s minimized to your system tray.
The Fix: Don’t Panic, We’re Hacking the Hex
You could always just uninstall it and try to hunt down the old 1.4 version installer. But honestly, if you want to stay on the current version and just stop the UI from nuking your processor, there’s a brilliant workaround floating around the community forums.
We’re going to use a Hex Editor to manually change two little pieces of code in the app’s executable file. It sounds like something out of a movie where you “hack the mainframe,” but I promise you it takes about two minutes and it’s super easy. By altering this specific memory address, we effectively disable the broken UI drawing loop while keeping all the awesome AI noise cancellation working perfectly in the background.
Here is exactly how you do it:
Step 1: Grab a Hex Editor
You need a small piece of software to look at the raw code. A really lightweight, safe, and free one is called HxD. Just download it and install it.
Step 2: Rescue the Executable
Open up your file explorer and navigate to where the app lives. It should be right here: C:\Program Files\NVIDIA Corporation\NVIDIA Broadcast.
Look for the file named NVIDIA Broadcast UI.exe. Do not try to edit it right there! Windows gets super protective of the Program Files folder and won’t let you save your changes. Instead, drag and drop NVIDIA Broadcast UI.exe onto your Desktop for a minute.
Step 3: Find the Magic Address
Open up your new HxD program. Drag the NVIDIA Broadcast UI.exe file from your desktop and drop it right into the HxD window. You’ll see a massive wall of numbers and letters.
Hit Ctrl+G on your keyboard to open the “Go to” menu. In the box, type exactly this: 5A06B and hit enter.
Step 4: Make the Change
Your cursor is now hovering over the exact piece of broken code causing all your headaches. Starting right at that address, type 90 E9 to replace what was originally there.
Step 5: Save and Replace
Hit Ctrl+S to save the file. You can now close HxD.
Finally, grab your modified NVIDIA Broadcast UI.exe from your desktop and drag it back into the original C:\Program Files\NVIDIA Corporation\NVIDIA Broadcast folder. Windows will probably ask you to provide administrator permission to move it back in—just click continue.
Did it work?
Boot up NVIDIA Broadcast and open your Task Manager. For me, it was like flipping a switch. The CPU usage instantly plummeted back down to almost nothing, my GPU wasn’t locked at 100% idle anymore, and the microphone filtering still sounded flawless.
