You bought a high-refresh-rate monitor, connected it to your gaming PC, enabled G-SYNC or FreeSync, and expected smooth gameplay. But you're still seeing screen tearing, stuttering, or the VRR option simply refuses to work.
Annoying, right?
The good news is that G-SYNC and FreeSync usually fail for a simple reason: the monitor, GPU, connection, driver, or display setting isn't letting Variable Refresh Rate (VRR) work properly.
G-SYNC and FreeSync do the same basic job. They let the monitor change its refresh rate to match the game's frame rate instead of forcing the monitor to refresh at one fixed speed.
So if your game is running at 83 FPS, a working VRR setup can make the display refresh around that rate instead of blindly running at 144Hz or 165Hz.
But here's the catch: G-SYNC or FreeSync doesn't just work because the monitor has a sticker saying it supports it.
The connection and settings matter too. Let's go through the real reasons it doesn't work and the fixes that actually matter.
First, Check What You Actually Have
Before changing ten settings at random, check your hardware.
- A GPU that supports the required VRR technology
- A monitor or TV that supports G-SYNC, G-SYNC Compatible, or FreeSync
- A connection that supports VRR for that particular monitor
For FreeSync, AMD supports FreeSync on compatible displays with supported Radeon graphics, while many modern NVIDIA GPUs can also use compatible Adaptive-Sync/FreeSync displays.
For NVIDIA G-SYNC, the situation depends on the type of display. A true G-SYNC monitor uses NVIDIA G-SYNC hardware, while a G-SYNC Compatible display uses variable refresh technology that NVIDIA has tested and approved.
G-SYNC vs G-SYNC Compatible
G-SYNC monitors use NVIDIA's G-SYNC technology.
G-SYNC Compatible displays are variable-refresh displays that NVIDIA has validated for use with GeForce GPUs.
So if your monitor says FreeSync Premium, that doesn't automatically mean you'll get a full G-SYNC experience on every NVIDIA setup.
Reason 1: VRR Is Disabled in the Monitor
Many monitors have a setting such as FreeSync, Adaptive-Sync, VRR, Variable Refresh Rate, or G-SYNC.
Go into the monitor's own menu and look under Gaming, Display, or something similar. Make sure VRR is enabled.
If Adaptive-Sync is turned off on the monitor, your graphics driver can't magically switch it on. It's like trying to turn on a lamp when the bulb isn't connected.
Reason 2: You're Using the Wrong Port
A monitor may support VRR through one connection but not another. Don't assume that because your monitor has HDMI, VRR must work through HDMI.
Check your monitor's manual or specifications.
DisplayPort Is Often the Safer Choice for PC
If you're troubleshooting a gaming PC, DisplayPort is often the easiest connection to test, especially with older G-SYNC setups.
If you're currently using HDMI and VRR isn't working, try DisplayPort if your monitor and GPU support it. Don't use an HDMI to DisplayPort adapter just for this test. Connect the display directly to the GPU with a suitable cable.
Also Read: Why Dolby Atmos Doesn't Work Through HDMI ARC
Reason 3: The Monitor Is Connected to the Motherboard
If you have a dedicated graphics card, connect the monitor to the graphics card, not the motherboard's video output.
Monitor
│
└── DisplayPort / HDMI
│
▼
Dedicated GPUNot here:
Monitor
│
└── HDMI
│
▼
MotherboardIf Windows is using integrated graphics instead of your dedicated GPU, your G-SYNC or FreeSync setup may not behave the way you expect.
Reason 4: G-SYNC Isn't Enabled in NVIDIA Control Panel
Open:
NVIDIA Control Panel → Display → Set up G-SYNC
Enable G-SYNC or G-SYNC Compatible. If you're troubleshooting, try windowed and full screen mode first.
Reason 5: Your Refresh Rate Is Set Too Low
Your monitor may support 144Hz, 165Hz, 240Hz or more, but Windows could still be running it at 60Hz.
Windows Settings → System → Display → Advanced display
Set the display to its supported high refresh rate and then test your game again.
Also Read: Why Local AI Models Need So Much RAM?
Reason 6: Your Game Is Outside the VRR Range
VRR doesn't mean the monitor can match absolutely any frame rate. Every display has a supported VRR range.
| Monitor | Example VRR Range |
|---|---|
| Monitor A | 48–144Hz |
| Monitor B | 48–165Hz |
| Monitor C | 60–240Hz |
If your game is running below the monitor's minimum VRR range, normal VRR may no longer work as expected. Some displays support LFC, or Low Framerate Compensation, which can help at very low frame rates.
Reason 7: Your FPS Is Higher Than the Monitor's Refresh Rate
Suppose you have a 144Hz monitor and your game is running at 220 FPS. Your GPU is producing frames faster than the display can refresh.
A practical solution is to use an FPS limit.
165Hz monitor
↓
FPS cap around 160–162 FPSThe exact cap isn't universal. Your game, monitor and latency goals matter.
Reason 8: Your Graphics Driver Is Outdated
VRR is controlled partly through the graphics driver. If you're using an old driver, update your GPU driver and restart the PC.
NVIDIA App → Drivers → Check for updates
AMD Software: Adrenalin Edition → Check for updates
Reason 9: Windows or the Game Is Using the Wrong Display
This becomes more common with multiple monitors. Make sure your game is running on the monitor that supports VRR.
Windows Settings → System → Display
Select your gaming monitor and make sure it's the main display if that's where you play. Also check the game's own display settings.
Reason 10: You're Using a Bad Cable or Adapter
A poor-quality cable, old cable, or adapter can cause display problems that look like a software issue.
GPU ───────── DisplayPort ───────── Monitor
Avoid unnecessary adapters, splitters, docking stations, KVM switches, HDMI converters, and long questionable cables while testing.
Reason 11: Monitor Overdrive or Anti-Blur Is Interfering
Some gaming monitors have Motion Blur Reduction, Anti-Blur, backlight strobing, MBR, ELMB, or ULMB. These features can interact with VRR.
If FreeSync isn't behaving properly, temporarily disable motion-blur or backlight-strobing modes and test again.
Also Read: What Happens When You Clear Browser Cookies?
Reason 12: You're Confusing V-Sync With VRR
These aren't the same thing.
| Technology | Basic Job |
|---|---|
| V-Sync | Controls frame timing around a fixed refresh rate |
| G-SYNC | Matches display refresh to GPU frame rate |
| FreeSync | Matches display refresh to GPU frame rate |
Don't just turn every setting on because it sounds helpful. That's how you end up with a settings menu that looks like a cockpit.
How to Fix G-SYNC Not Working
Step 1: Enable VRR on the Monitor
Open the monitor's menu and enable G-SYNC, Adaptive-Sync, or VRR.
Step 2: Use a Direct GPU Connection
Connect the monitor directly to the NVIDIA GPU. Prefer DisplayPort when troubleshooting older G-SYNC setups.
Step 3: Open NVIDIA Control Panel
Display → Set up G-SYNC
Enable G-SYNC or G-SYNC Compatible.
Step 4: Check Refresh Rate
Set the monitor to its intended high refresh rate in Windows.
Step 5: Test Full Screen
Run a game in full-screen mode first. If it works there but not in windowed mode, you've narrowed down the problem.
Step 6: Check the GPU Driver
Update NVIDIA drivers and restart Windows.
How to Fix FreeSync Not Working
Step 1: Enable FreeSync on the Monitor
Open the monitor's OSD and turn on FreeSync or Adaptive-Sync.
Step 2: Open AMD Software
AMD Software: Adrenalin Edition → Gaming → Display
Check whether FreeSync is enabled.
Step 3: Check the Cable
Try DisplayPort if your monitor supports it. If using HDMI, confirm that your specific monitor supports FreeSync through HDMI.
Step 4: Check Refresh Rate
Set Windows to the monitor's proper refresh rate.
Step 5: Update the AMD Driver
Install the latest driver and restart.
Step 6: Test a Game
Watch for screen tearing, stutter, sudden refresh-rate changes, and smoothness when FPS changes.
A Quick Fix Checklist
| Check | What to Do |
|---|---|
| Monitor VRR | Enable G-SYNC, FreeSync, Adaptive-Sync or VRR |
| Cable | Try a direct DisplayPort or supported HDMI connection |
| GPU connection | Connect the monitor directly to the dedicated GPU |
| Refresh rate | Set the correct high refresh rate in Windows |
| NVIDIA | Enable G-SYNC in NVIDIA Control Panel |
| AMD | Enable FreeSync in AMD Software |
| Drivers | Install the latest graphics driver |
| FPS | Keep FPS within the monitor's VRR range |
| Motion blur | Temporarily disable Anti-Blur/VRR-conflicting modes |
| Game display | Make sure the game is running on the VRR monitor |
How to Know If VRR Is Actually Working
Don't rely only on the NVIDIA or AMD setting saying "Enabled." Test it.
120 FPS ↓ 90 FPS ↓ 70 FPS ↓ 50 FPS
A working VRR setup should keep motion much smoother as the frame rate changes within the monitor's supported VRR range.
What If G-SYNC or FreeSync Is Enabled but You Still See Tearing?
Don't immediately assume it's broken. First check your FPS.
If your FPS goes above the monitor's maximum refresh rate, use an FPS cap and test again. Also check whether the game is actually running on the correct monitor and whether another display setting is interfering.
VRR isn't a magic button that turns a 40-FPS game into a smooth 144-FPS game. If the GPU is struggling badly, the game can still feel slow.
Final Verdict
When G-SYNC or FreeSync doesn't work, the problem is usually not mysterious.
Start with the basics: enable VRR on the monitor, use the correct connection, and make sure the monitor is connected directly to the dedicated GPU.
After that, check the Windows refresh rate, GPU driver, NVIDIA or AMD control panel settings, game display mode and FPS range.
And here's the biggest troubleshooting trick: Don't change ten settings at once. Change one thing, test the game, and see what happens.
Frequently Asked Questions
Why is G-SYNC not showing in NVIDIA Control Panel?
Check whether your monitor supports G-SYNC or G-SYNC Compatible, make sure VRR or Adaptive-Sync is enabled in the monitor menu, and connect the display directly to the NVIDIA GPU. Also update the NVIDIA graphics driver and check the cable and display connection.
Why is FreeSync not working on my monitor?
Make sure FreeSync or Adaptive-Sync is enabled in the monitor's settings and in AMD Software. Also check that your GPU, monitor and connection support FreeSync together, then verify that Windows is using the correct refresh rate.
Does FreeSync work through HDMI?
Yes, FreeSync can work through HDMI, but HDMI support depends on the specific display and GPU. Check your monitor's specifications before assuming every HDMI port supports it.
Is DisplayPort better than HDMI for G-SYNC or FreeSync?
It depends on the monitor and GPU. DisplayPort is often the simplest connection to test on a PC, especially with older G-SYNC setups, while many modern FreeSync displays support VRR through both DisplayPort and HDMI.
Can G-SYNC and FreeSync work outside the monitor's FPS range?
Normal VRR works within the monitor's supported refresh-rate range. Some displays support Low Framerate Compensation, or LFC, which can help when the game's FPS drops below the normal VRR range.