An Xbox console and controller sit before a TV showing a military game with 4K, 120 Hz, and VRR settings.
Call of Duty: Modern Warfare 4 launches on October 23, 2026. Days before that, Infinity Ward posted a warning about Performance Mode on consoles. The headline version, "buy a new monitor," is louder than the facts support. Here is what the announcement says, what it doesn't say, and what to check on an Xbox Series X|S before spending any money.

An Xbox console and controller sit before a TV showing a military game with 4K, 120 Hz, and VRR settings. What was announced​

On October 20, 2026, the official Call of Duty Updates account on X posted a notice aimed at early-access players. Gameranx's coverage reproduces the post, which says players on PS5 and Xbox Series X|S need Variable Refresh Rate (VRR) enabled to get Performance Mode in the MW4 Campaign and DMZ. The post says the same condition will apply to Performance Mode in Call of Duty: Warzone with Season 1.

The post also gives troubleshooting advice. If you are stuck at 60 Hz in these modes, make sure your display supports 120 Hz and VRR, and check that VRR is turned on in your settings.

Key points:

  • Platforms: PS5 and Xbox Series X|S. The post doesn't mention PC.
  • Modes affected now: Campaign and DMZ Performance Mode.
  • Modes affected later: Warzone Performance Mode, from Season 1. This is a stated future requirement, not something active on October 20.
  • Symptom: a 60 Hz lock.
  • Official fix offered: confirm the display supports 120 Hz and VRR, and confirm VRR is enabled.

What it does not mean​

  • The game still runs without VRR. Gameranx reports that players without a VRR screen can still play. They are limited to Balanced or Quality mode. That is Gameranx's reading, not wording from the official post.
  • You don't necessarily need a new monitor. The post says "display," not "monitor." A VRR-capable TV with 120 Hz support may satisfy it. Windows Central's coverage leans toward buying a monitor, and its monitor picks are shopping suggestions rather than part of the requirement.
  • A high refresh rate alone isn't enough. A 240 Hz panel with no VRR over your connection doesn't meet the stated condition. The post asks for both 120 Hz and VRR, enabled.
  • The reason is unexplained. Infinity Ward gave no technical explanation. There are also no published benchmarks or input-lag measurements, so how much VRR changes frame rates in practice isn't established. Any theory about why the studio chose this is speculation.

How to check your Xbox setup​

The official post doesn't include an Xbox menu walkthrough. The steps below come from general Xbox guides, so labels may vary slightly between system updates.

  1. Open display settings. Go to Settings > General > TV & display options. Open Settings with the gear icon, then pick General, then TV & display options.
  2. Run the capability check. Several setup guides recommend the 4K TV details screen. It confirms whether the link supports your selections.
  3. Set the refresh rate. If your TV supports it, choose 120Hz under Refresh rate in the same menu.
  4. Enable VRR. Open Video modes under Advanced, select the variable refresh rate option, and choose Off, Always On or Gaming Only. Gaming Only is widely recommended. That setting applies adaptive sync to games and leaves video apps alone.
  5. Check the display itself. If the VRR option is greyed out, the display may not support FreeSync or HDMI VRR, or FreeSync/Adaptive Sync may be switched off in its on-screen menu.
  6. Check the cable and port. Guides stress using an Ultra High Speed HDMI cable and, for 4K at 120Hz, a display with a true HDMI 2.1 port. Many TVs also need an "enhanced" HDMI mode enabled on the specific port you use.

Compatibility notes​

  • FreeSync works. BenQ notes that Xbox consoles work with AMD FreeSync, which is compatible with VESA Adaptive Sync. G-Sync monitors over HDMI may work, but that isn't officially supported and results vary.
  • Resolution and refresh rate trade off. 4K at 120Hz requires HDMI 2.1, while HDMI 2.0 can still do 120Hz at lower resolutions like 1080p or 1440p. If your display supports VRR but you still see a 60 Hz lock, check the resolution and refresh settings.
  • There is no guarantee. Even with everything enabled, the announcement doesn't promise a specific frame rate or say that these checks fix every 60 Hz case.

The complaints​

Windows Central reports that competitive players are angry about the timing. That is a fair point. A requirement that affects how people buy hardware would have been easier to take with more notice. The announcement came three days before launch, with no explanation.

Casual and campaign players will probably notice little. Competitive multiplayer players who want the highest frame rates on console are the ones who may need to change their screens or setups. Warzone's Season 1 requirement matters most for them.

What to do now​

  • Check your display's specs for VRR (HDMI VRR, FreeSync or Adaptive Sync) and 120 Hz support.
  • Run the 4K TV details check on your console.
  • Turn on the console's VRR setting and the display's own adaptive sync option.
  • Confirm the cable and HDMI port support the mode you want.
  • Only consider new hardware if the display truly lacks VRR. Otherwise, you can still play in Balanced or Quality mode.

Watch for any follow-up from Infinity Ward. A technical explanation or a patch would change this picture.

 

References

  1. Call of Duty: MW4 demands VRR on Xbox for the best experience Windows Central 2026-10-21T14:17:19+00:00
  2. Call of Duty: Modern Warfare 4 Adds VRR Requirement For Performance Mode On PS5 and Xbox Series X|S - Including COD Warzone - Gameranx gameranx.com
  3. VRR on Xbox Series X benq.com