Call of Duty: Modern Warfare 4 Beta Tackles the 'Compiling Shaders' Wait and Update Restarts

Anyone who has launched a Call of Duty game on PC knows the ritual: download finishes, you hit play, and then you stare at a "Compiling Shaders" screen for minutes before the game lets you in. With the Call of Duty: Modern Warfare 4 beta arriving this weekend, Infinity Ward and co-developer Beenox are doing something about it.

Shaders are small programs that tell a graphics card how to render a game's visuals. Compiling them at launch — translating those programs for a specific GPU — has been a long-standing friction point for PC players across the Call of Duty franchise. According to the official Call of Duty blog, the two studios collaborated to bring shader pre-loading to the series starting with the Modern Warfare 4 beta (Call of Duty Blog).

Here is how it works in the beta. Once the game download is complete, shaders begin pre-loading in the background, meaning much of the work is done before a player ever presses start. On the Battle.net launcher — Blizzard's PC storefront — this pre-loading begins by default. On Steam, shader pre-loading is enabled, though players will still sit through a "Compiling Shaders" step the first time they launch the game. That step should be faster than before, according to Eurogamer (Eurogamer).

The full payoff arrives at Modern Warfare 4's full release. At that point, PC players will need to compile shaders once, rather than repeating the process with every major seasonal update — the cadence of new content that keeps a live-service game fresh after launch.

The beta also addresses a second irritant: the "Update Requires Restart" message. Infinity Ward has reduced the number of times players must close and relaunch the game to apply an update. During the beta, PC and PlayStation 5 players get the improved experience. Xbox players still need to restart to apply updates, and Nintendo Switch 2 — the only platform that does not benefit from this particular work at all — sits it out entirely (Eurogamer).

This is not the franchise's first pass at the shader problem. The Call of Duty: Black Ops 6 Season 03 patch notes, published in March 2025, included shader pre-loading improvements that smoothed menu framerate during compilation and split the pre-loading warning by game mode (Call of Duty Blog). What the Modern Warfare 4 beta introduces goes a step further: pulling the work ahead of the launch screen rather than just making the wait inside it smoother.

Alongside the beta details, the Call of Duty blog published minimum and recommended PC specifications for Modern Warfare 4 on 19 August 2026, giving players a chance to check their hardware before the download begins (Call of Duty Blog).

For fans, this means the weekend beta is not just a first taste of Modern Warfare 4's gameplay. It is also a test of whether two of the series' most persistent annoyances — the shader wait and the forced restart — are finally on their way out.