Handheld Companion – Release Notes

0.28.2.2 Highlights

.NET 10 & Windows 11 focus: Handheld Companion now runs on .NET 10 and, starting from this branch, targets the Windows 11 SDK only (Windows 10 is no longer supported).
AMD Curve Optimiser: Implemented AMD CPU Curve Optimiser that lets you under- or over-volt compatible AMD devices to reduce energy consumption

GPD Win 5: New (WIP) device support.
ROG XBOX Ally: Added dedicated device support for both non-X and X versions.
MSI Claw: Better day-one experience with automatic msiapcfg deployment for the front OEM buttons, plus a fix for the 150% max fan speed issue.
AYANEO (all devices): Added built-in AYANEO power profiles (Extreme / Balanced / Saving) that ship directly with HC and can be applied from the app.
AYANEO Flip 1S: Fixed gyroscope readings.
Steam Controller: Fixed IsReady / IsConnected checks.
Steam Deck: Corrected GPU telemetry reading.
AOKZOE / OneXPlayer (all devices): Fixed OEM button support and crashes on initialisation.

You can now mark profiles as favorites from the Library page.
Library artwork sizing was tuned for a cleaner grid, and empty executable paths are no longer allowed when saving profiles.

Added a Power dropdown to QuickTools (Lock, Sleep, Shutdown, Restart).
Battery overlay widget logic and display improved; it no longer depends on LibreHardwareMonitor.

Toasts can now include clickable actions for richer notifications.
Splash screen is no longer forced AlwaysOnTop, so it won’t get in your way during startup.

Telemetry & CPU usage

Addressed excessive CPU usage in the LibreHardware ADLX integration.
Fixed a CPU leak when HidDevice is torn off.
Process manager hardening: The process manager now treats critical shell processes as Restricted, reducing the chance for Windows UX to interfere with our profile logic. This includes:
Taskbar and ShellHost
ForegroundStaging and XamlExplorerHostIslandWindow
ApplicationManager_DesktopShellWindow

Updated several core libraries, including SDL 3.3.2, HidHide, Sentry, LibreHardwareMonitor, WindowsAPICodePack, Nefarius.ViGEm.Client, and more, plus added detection/support for Moonlight virtual controllers.

Fixed a crash caused by a race condition in VirtualManager during resume from sleep.
Fixed rare crashes linked to null controllers, null keyboard arguments, and null processEx.
Hardened joystick-to-button / keyboard / mouse-click mappings (axis threshold logic).
Fixed Legion Go touchpad handling (first part of a larger rework).
Fixed missing UseOpenLib declarations that caused crashes on GPD Win devices.
Fixed Steam Deck GPU readings and various controller stability issues.