How many frames per second you get in each scene is display in the window title and on the bottom of the window/screen if you enabled Display OSI. Some can be rendered using OpenGL or Vulkan, some can only be rendered using OpenGL. The individual tests are just single scenes displaying various things like a MSI logo or a donut.

There is a fine big black RUN stress test button to start each test. MSI Kombustor starts off with a simple window where you can select what 'Stress' test to run, resolution, Vulkan GPU/API if the test is using Vulkan and weather to run in fullscreen or not. You can run it with later versions, but you can't install it. It installs fine with Wine versions up to Wine 6.0. The installer fails to run with Wine 6.5 and 6.6.

All the OpenGL and Vulkan scenes render like they should but the 'PhysX' GPU tests fail with a message saying 'No PhysX GPU support'. DXVK is not required and would make no difference since none of the tests use DirectX. The 64-bit Windows version runs almost perfectly under Wine 5.16+ (likely earlier versions too). MSI Kombustor is only available for Microsoft Windows.

Msi kombustor 3.5 0