As of Special K v 0.11.0.45, D3D12 support is incomplete and getting SK to work with this game requires a few manual INI edits.
The following changes (SpecialK.ini) are necessary for SK to work with HZD:
[API.Hook] LastKnown=64 d3d11=false d3d12=true
Most of SK's features (widgets and control panel aside) are functional, crucially the framerate limiter works and has been verified using CapFrameX to provide better frame pacing than RTSS / NVCPL's framerate limiter.
Framerate Limiting Config
[Macro.FPS] Ctrl+Shift+1=TargetFPS 60 Ctrl+Shift+2=TargetFPS 45 Ctrl+Shift+3=TargetFPS 30 Ctrl+Shift+0=TargetFPS 0 [Render.FrameRate] TargetFPS=60.0 SleeplessRenderThread=true SleeplessWindowThread=true
The macros section of the INI allows you to bind various limits to a keyboard shortcut; you cannot use the control panel to change limits.
A note regarding Display Modes:
|Fullscreen Exclusive mode is absolutely necessary for sane framepacing in this game unless you use Special K's secret sauce (waitable swapchains).
Waitable Swapchains + SK’s framerate limiter will turn the table in favor of borderless window mode.