New Windows 11 Update Could Slow Down Your PC

Microsoft’s latest December 2025 updates are a mixed bag for Windows users. On one hand, the company has confirmed that the AppX Deployment Service (Appxsvc) will now default to an “Automatic” startup type in Windows 11 24H2/25H2 and Server 2025 updates (KB5072033). This service handles Store apps and updates, but Neowin notes that it has a long history of eating up CPU and RAM, meaning users on lower-end hardware could see a performance hit as the process runs from boot. Microsoft warns that turning it off can break Store functionality.
Meanwhile, Microsoft aims to deliver significant performance improvements through Native NVMe support. The opt-in model reportedly avoids older SCSI processes, boosting input/output operations per second (IOPS) by up to 80% and reducing CPU usage by nearly 45%. This enables modern servers to take full advantage of fast NVMe drives without legacy software slowdowns.
These changes follow a rough patch for Windows updates. Just months ago, users reported SSD failures and sluggish performance following security updates. Earlier this year, reports claimed Windows 11 performance tanked on Intel’s latest Core Ultra chips. It’s safe to say that 2025 has been a “fix one thing, break another” type of year for Microsoft.
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