--- title: Getting That 4K 120fps Magic on Your Xbox Series X siteUrl: https://logzly.com/xboxinsider author: xboxinsider (Xbox Insider) date: 2026-06-26T18:00:31.981076 tags: [xbox_series_x, settings_guide, gaming_setup] url: https://logzly.com/xboxinsider/getting-that-4k-120fps-magic-on-your-xbox-series-x --- Look, you spent the money on a killer TV and the best console. But is your setup actually delivering that buttery-smooth, super-sharp 4K 120fps experience? Let’s cut through the jargon and get your Xbox Series X running like a dream. This isn't some complex tech thesis—it's just the steps I use here at [Xbox Insider cloud gaming guide](/xboxinsider/xbox-cloud-gaming-setup-guide-play-anywhere-in-5-minutes) to make sure I'm seeing every pixel and frame I paid for. ## What You Actually Need to Hit 4K 120fps Before we dive into settings, let's get real about the gear. It's a three-part chain: the console, the cable, and the TV. If one link is weak, the whole thing falls apart. First, your TV *must* have a few specific things. It needs an HDMI 2.1 port. Not just any "high-speed" port—look for the actual HDMI 2.1 label, often on port 3 or 4. It also needs a feature called VRR (Variable Refresh Rate) and ALLM (Auto Low Latency Mode). Check your TV's spec sheet or model number online. Second, you *must* use the HDMI cable that came in the Xbox Series X box. It's a certified Ultra High Speed cable. That random cable from your old DVD player? Toss it back in the drawer. Seriously, the one in the box is your golden ticket. If you're missing any of this, your Xbox will still look great, but you'll be capped at 60fps. And that's okay! But if you have the gear, let's unlock it. ## The Xbox Insider TV & Display Setup Checklist Okay, power up and grab your controller. We're going into the settings. If you want a step‑by‑step visual guide, check the [Xbox Insider TV & display setup guide](/xboxinsider/xbox-cloud-gaming-setup-guide-play-anywhere-in-5-minutes). 1. **Press the Xbox button > Profile & system > Settings > General > TV & display options.** 2. **Under Resolution:** Select **4K UHD**. Seems obvious, but sometimes it gets knocked down to 1080p. 3. **Under Refresh rate:** This is the big one. Select **120Hz**. If it's grayed out, your TV or cable isn't telling the Xbox it can handle it. That's your clue to double-check your TV's HDMI 2.1 settings. 4. **Now, click "Video modes."** Here's where the magic happens. You want to check these boxes: * **Allow 4K** * **Allow HDR10** (if your TV supports it) * **Allow Variable Refresh Rate** (This is VRR. It makes screen tearing vanish.) * **Allow Auto Low Latency Mode** (This is ALLM. It switches your TV to Game Mode automatically.) 5. **Skip "Allow YCC 4:2:2" unless you have weird HDR issues.** You probably don't. That's it for the main Xbox settings. But we're only halfway there. Your TV has its own secret menu. ## Don't Forget Your TV's Own Settings This is the step everyone misses. Your TV might have its HDMI 2.1 features turned *off* by default. You need to find the "HDMI Signal Format" or "Input Signal" setting for the port your Xbox is using. * You're looking for a setting to change from "Standard" to "Enhanced," "Enhanced VRR," "Dolby Vision," or "HDMI 2.1." The name varies by brand (Sony, LG, Samsung all call it something different). * Also, find your TV's Game Mode or Game Optimizer menu and make sure it's ON. With ALLM, this should happen automatically, but it's good to verify. If you see a flicker or the screen goes black for a second when you change these, that's normal. The devices are shaking hands and agreeing on the new, awesome bandwidth. ## Testing and Troubleshooting the Xbox Insider Way So, how do you know it's working? Go back to **Settings > General > TV & display options > 4K TV details**. This screen tells you *exactly* what your TV is currently sending. You should see green checkmarks for 4K, 120Hz, HDR10, VRR, and ALLM. The best test, though, is to jump into a game that supports 120fps. Games like *Halo Infinite* (MP), *Ori and the Will of the Wisps*, *Gears 5* (MP), or *Rocket League* have it. The difference in smoothness, especially in fast-paced action, is night and day. It feels responsive and fluid. **Hit a snag?** Here’s my simple Xbox Insider troubleshooting list: * **No 120Hz option?** Check your TV's HDMI port setting. Use the cable that came with the console. * **Picture looks weird or colors are off?** You might have too many "Allow" boxes checked. Try turning off "Allow YCC 4:2:2." * **Game looks too dark in HDR?** Run the HDR calibration tool in the same TV & display settings menu. It takes two minutes. It's not about maxing out every single toggle. It's about enabling the right ones for your specific setup. The goal is a stunning, smooth picture that just gets out of the way and lets you game. The Xbox Series X is an absolute powerhouse, and seeing it finally run a game in full powerhouse, and seeing it finally run a game in full 4K at 120 frames per second is a real "wow" moment. It takes a few minutes in the menus, but once it's set, you're set. You can just enjoy the games. That's the whole point of the [Xbox Insider cloud gaming guide](/xboxinsider/xbox-cloud-gaming-setup-guide-play-anywhere-in-5-minutes)—spending less time fiddling and more time playing.