Acer Nitro Gaming Laptop: Screen Stuttering and Flickering in Games — Settings or a Faulty Panel?

The short answer: Before reinstalling any drivers, run a test outside Windows — switch on the laptop and enter the BIOS (Setup) screen. The graphics driver, power-saving features and variable refresh rate are not active there. If the image is stable in the BIOS, the cause lies in the settings: most commonly Panel Self Refresh, G-SYNC / VRR, a recently updated driver or the refresh rate. If the image also flickers in the BIOS, it is a hardware problem — the LCD cable in the hinge, the panel or the onboard graphics — and the laptop needs professional repair.

One test divides the problem into two categories

Flickering on a gaming laptop may always look much the same, but it has two entirely different sets of causes: either the display features are conflicting with each other or the signal path to the panel is damaged. The decisive test is to check the screen in an environment where Windows is not running.

In its guide to screen flickering with Intel Graphics, Intel lists checking whether the image also flickers on the BIOS screen as one of the basic steps. It adds two more: testing another monitor and using direct cables without adapters or dongles. On a laptop, this means performing three simple tests:

1. BIOS. Switch the laptop off, turn it back on and immediately enter Setup (on an Acer Nitro, press F2 when the logo appears). Leave the screen on for two or three minutes and gently move the lid.
2. External monitor. Connect one using a direct HDMI cable without adapters and play a game for a while. A clear image on the external display combined with flickering on the built-in panel points to the panel or its cable.
3. Lid position. Check whether the flickering changes with the opening angle. If it does, stop trying to fix the problem through software.

Only if the image is stable both in the BIOS and on the external monitor does it make sense to work through the settings.

Panel Self Refresh: a power-saving feature that can cause flickering

Panel Self Refresh is a power-saving feature of the integrated graphics. When the image is not changing, the display retains the last frame itself while the GPU reduces its power consumption. However, with some combinations of panels and drivers, the transition between a static and moving image causes the entire screen to flash briefly — and it is most noticeable when the laptop is running on battery power.

In its screen-flickering guide, Intel recommends disabling this feature on laptops. According to Intel, the procedure is to open Intel Graphics Command Center, select System in the left-hand menu, find Panel Self Refresh under the Power tab and switch it off. The Power tab does not appear on desktop computers because it contains settings for laptops and mobile devices.

Why this also matters on a gaming machine with a dedicated GPU: while the laptop is operating in hybrid mode, the built-in panel is connected to the integrated graphics, and the dedicated GPU merely supplies the rendered frames. The relevant display setting therefore resides in the Intel software, not the NVIDIA software.

Variable refresh rate: G-SYNC and fluctuating FPS

Another common source of flickering is variable refresh rate (VRR). It is a standard feature on gaming laptops sold today, so even owners who have never knowingly enabled it may encounter it. VRR allows the panel to adapt to the rate at which the game supplies frames. It works smoothly while the FPS remains stable, but when the frame rate fluctuates rapidly — on loading screens, in game menus or during performance drops — the panel’s frequency changes as well, and some panels respond with a visible shift in brightness.

NVIDIA explains how to enable G-SYNC and G-SYNC Compatible in NVIDIA Control Panel under Display → Set up G-SYNC; the Monitor Technology option is located under 3D Settings → Manage 3D Settings. You can disable VRR there for testing. NVIDIA also states that enabling G-SYNC disables the preferred refresh rate feature and makes the display run at the highest available rate. That alone may change the combination of settings from the one you previously used.

Play for ten minutes with G-SYNC disabled. If the flickering disappears, you have found the cause.

Switching GPUs: Optimus and Discrete GPU only

Acer describes two places on Nitro laptops where you can force rendering on the dedicated GPU. The first is the NitroSense application: click the gear icon in the upper-right corner, enable Discrete GPU only and restart the laptop. The second is the BIOS: press F2 during startup, open the Advanced tab and find Display mode, where you can switch between Optimus and Discrete GPU only.

There are two things you need to know beforehand. Not every model offers this option — switch support also depends on the installed built-in panel, and the setting is often unavailable in older BIOS versions. Acer support can tell you whether your laptop has it based on the exact model number printed on its label. Second, enabling Discrete GPU only prevents the USB-C port from outputting video over DisplayPort, so a docking station or monitor connected via USB-C will go dark. If the flickering starts shortly after changing this setting, switch Display mode back to Optimus and compare the results.

Driver and refresh rate

In the same guide, Intel also mentions two commonly overlooked steps: roll back the most recent driver change if the flickering began after an update, or install the latest version in Windows Safe Mode; then lower the resolution by one step and select a lower refresh rate.

On a gaming panel running at 144 Hz or more, this is a useful practical test: switch to 60 Hz and play for half an hour. If the image is stable at 60 Hz but jumps at the highest refresh rate, the panel is not operating reliably at the upper end of its range, and you know what to report under warranty or have checked by a repair shop. Do not confuse this with performance drops — if the image “stutters” while the FPS also falls, investigate temperatures and power delivery instead, as described in the computer shuts down or FPS drops while gaming.

Symptoms, causes and what you can try at home

If the fault survives these checks, or the damage is mechanical, laptop repair in Brno takes over. A related step is fault diagnostics in Brno.

When it is definitely a hardware fault

Three findings bring software troubleshooting to an end. The LCD cable in the hinge becomes worn and damaged through repeated opening and closing of the laptop; the telltale symptom is that the image changes with the angle of the lid and flickers intermittently when the laptop is handled. Every additional opening can make the problem worse, so this is the point at which you should stop. A faulty panel causes flickering regardless of the lid position, and the problem remains visible in the BIOS while the external monitor stays clear — the boundary between repair and replacement is discussed in a cracked or flickering laptop display. A failing graphics chip produces the same artefacts on an external monitor; examples are shown in graphics problems: artefacts, lines or a black screen.

The condition of the hinges is also relevant: loose or torn lid mounts put strain on the cable that carries the video signal — see laptop hinges creak and the lid has become loose. The troubleshooting process for an external display is different and is covered in the monitor flickers, flashes or goes black for several seconds.

What to prepare before visiting a repair shop

Bring the exact model number from the label on the underside of the laptop, a note explaining when the problem first appeared and whether it followed a driver or Windows update, the results of the BIOS and external-monitor tests, and information on whether the flickering changes with the position of the lid. A short video recorded on your phone is more useful than a written description — a flash lasting only a fraction of a second is difficult to describe in words.

Frequently asked questions

How can I tell whether it is a setting or a fault?

Test the screen in the BIOS, where the driver and power-saving features are not active. A stable image in the BIOS means software; flickering in the BIOS means hardware.

Where can I disable Panel Self Refresh?

In Intel Graphics Command Center: System, Power tab, Panel Self Refresh. The Power tab does not appear on desktop computers.

Why is the flickering related to FPS?

With variable refresh rate, the panel adapts to the pace of the game. When the frame rate fluctuates rapidly, the panel’s frequency changes as well, and some panels respond with a change in brightness.

Does every Nitro have a dedicated-GPU switch?

No. Acer documents the Discrete GPU only option in both NitroSense and the BIOS under Display mode, but support depends on the model and installed panel, and the setting is absent from older BIOS versions.

Can I continue gaming with a flickering display?

If the flickering depends on the position of the lid, it is better not to. A partially broken cable in the hinge becomes more damaged every time the lid is opened, turning occasional flickering into a permanent loss of the image.

At Servis PC Brno, we regularly dismantle and repair gaming laptops, and we diagnose a flickering image from the end of the signal path: we check it in the BIOS, on an external monitor and with the LCD cable disconnected. This allows us to determine whether the problem lies in the panel, the cable in the hinge or the onboard graphics — and we will tell you before ordering any parts. Book an appointment through our booking form or call 774 777 774; include the exact model number from the label, when the flickering occurs and whether it changes with the position of the lid.

Order online: Fault diagnostics — tell us the model and what happens, and we will come back with the next step.

Sources

• Intel: How to Fix a Flickering Screen with Intel Graphics
• Intel: How to Enable and Disable Panel Self Refresh
• NVIDIA Control Panel: Variable Refresh Rate / Set up G-SYNC
• Acer Community KB 15133: How to Configure a Nitro Notebook so the RTX Series GPU is Used for All Graphic Applications