A panel locked to 60Hz on a ROG Ally X wastes the refresh you paid for, and the fix is almost always a setting, a cable, or a driver rather than a fault.

Quick Answer

Set the rate in Windows first: Advanced display settings, choose 144Hz, 165Hz, or 240Hz, apply. If the option is greyed out, the cable is the most common culprit, then the monitor's internal overclock or rate setting, then a GPU driver that needs a clean reinstall via DDU. That stays true here even when a similar guide suggests otherwise.

Use a cable rated for the refresh you want

Bandwidth is the silent killer of high refresh. A 1440p 165Hz panel needs DisplayPort 1.4 or HDMI 2.1; an older HDMI lead trains down to 60Hz to stay stable. A proper cable runs roughly R450 to R1,200, far cheaper than the GPU or monitor people replace by mistake. Plug into the dedicated GPU ports, never the motherboard, when a card is installed. That single discipline is what separates a tidy a ROG Ally X build from a frustrating one.

Rule out the accessory, then the display

Peripherals like a mouse, headset, keyboard, DAC, or router do not set the screen's refresh rate, so do not let an unrelated upgrade distract you. Confirm the rate in display settings on the GPU output, then check the accessory's own polling or sample rate separately. Keeping the two diagnoses apart stops you chasing a refresh fault inside a device that never controlled it. Applied to a ROG Ally X, the difference shows up within a single test session.

Enable the panel's own high-rate mode

Many monitors ship with their high-refresh or overclock mode switched off in the on-screen menu, and Windows can only offer rates the panel reports. Open the monitor menu, turn on the high-rate or OC option, save, then set the rate again in Windows. Adaptive sync or FreeSync settings live in the same menu and often need enabling for a smooth result. For a ROG Ally X, write the result down so you never repeat a passed test.

FAQ

Will a higher refresh rate hurt performance?

A higher refresh rate only shows frames the GPU already produces, so it does not reduce performance; it just removes the artificial 60fps ceiling. If frame rate is the limit, lower a few settings rather than the panel's refresh. For a ROG Ally X, the right call now saves a return and a wasted weekend.

Why is my refresh rate option greyed out?

A greyed-out rate almost always means the cable cannot carry it or the panel's high-rate mode is off. Swap to a DisplayPort 1.4 or HDMI 2.1 lead, enable the OC mode in the monitor menu, then reopen Advanced display settings and the higher rates should appear. Most a ROG Ally X questions in SA come down to exactly this point.

Does my device's output limit the rate?

It can. Handhelds and laptops over a dock may cap at 60Hz unless DisplayPort Alt Mode and a capable dock are used. Check the device's documented output rate and the dock spec before blaming the monitor. On a ROG Ally X, a calm second test beats a panicked parts order every time.

Match the monitor to your frame rate Once the refresh is set correctly, shortlist Evetech panels whose refresh matches what your GPU delivers so you pay for frames you will actually see. A point easy to skip, yet it changes the result more than people expect.