Windows 11 Dev Drive for Games: How to Use It to Speed Up Loading

Windows 11’s Dev Drive — a feature buried in Settings, undocumented in marketing, and officially reserved for developers, is now being repurposed by users to cut game load times, slash shader compilation delays, and speed up asset streaming in titles like Backrooms: Escape Together.* The setup costs nothing. It requires no new hardware.

And it runs on any internal PCIe Gen 4 NVMe SSD. The same drive most gamers already have.* But it does require Windows 11, ReFS formatting, and a willingness to treat a virtual hard disk like a trusted storage zone.* XDA Developers confirmed the effect: first-launch shader compilation dropped from minutes to under two minutes.

Subsequent launches took less than one second, so fast the screen couldn’t be captured.* On the same physical SSD, an NTFS install still showed persistent shader compilation screens.* That’s not benchmarked latency. It’s observed behavior. Consistent across multiple tries, tied directly to how Windows handles file I/O on a Dev Drive.* Two things make it faster: Microsoft Defender shifts to asynchronous background scanning instead of blocking every file open, and fewer filesystem filters sit in the I/O path.* Both changes are automatic when the volume is marked “trusted”, which it is, by default.* Setting it up takes five minutes.* Go to Settings > System > Storage > Advanced storage settings > Disk & volumes > Create Dev Drive.* Pick “Create new VHD”, name it, set location (e.g., C:), size (50GB sufficed for a Steam library on a laptop), and choose VHDX + Dynamically expanding.* Then select the unallocated space, assign a drive letter, format.