What kind of gpu do you have, nvidia, amd or intel?
You might need to clear the shader cache in the user data folder.
(windows)
%appdata%\Godot\app_userdata\HardStuck\
(linux)
~/.local/share/godot/app_userdata/HardStuck/
There should be a "vulkan" and a "shader_cache" folder, simply delete them and the game should start building shaders from scratch