I finally managed to download and run this thing. But... it effin' eats my 16 CPU threads alive! How is this possible?
What is Lumen? How do you enable hardware RT and DLSS?
You can change the settings and create your own packaged demo. Lumen is the way Uneal Engine 5 does Ray Tracing by default but you can change it to Standalone Ray Traced (Deprecated). Standalone Ray Traced (Deprecated) seems faster.
If your have a Nvidia card, then turn on hardware RT (Standalone Ray Traced (Deprecated)) and install DLSS. So edit, project settings and go to rendering. Set all mention of Lumen to Hardware RT (Standalone Ray Traced (Deprecated)). Turn on all the RT effects for hardware RT. Install DLSS plugin is easy. Turn off TSR, do not enable AA because DLSS has AA builtin. Watch this video for how to install DLSS
To install DLSS you just need to download it from NVidias website. Look for the UE5 DLSS plugin. There is a plugin folder in both the demo and Unreal Engine 5. You need to copy the DLSS folder, NIS folder and the DLSSMoviePipelineSupport folder into these plugin folders. DLSS found at this link on nvidia's website
https://developer.nvidia.com/rtx/ray-tracing/dlss/get-started#ue-version To install the plugin you need to first enable it within the engine. This can be done by going to the edit menu and then plugins. Under plugins search for DLSS and tick the box.
Now that is done you need to run some console commands. See the video at 42:14
The commands to enter into the comsole in unreal engine 5.
r.DefailtFeature.Alialiasing(2,default)
r.TemporalAA.Upscalar(1,default)
r.Reflections.Denoiser(2,default)
r.BasPassForceOutputsVelocity(0,default) I set it too r.BasPassForceOutputsVelocity(1,default) but the document states 0.
r.NGX.DLSS.Enable(1,default)
r.NGX.DLSS.Quality(1,default)
-2: Ultra Performance
-1: Performance (default)
0: Balanced
1: Quality
2: Ultra Quality
Note the cosole is found in the lower left, look for the text box with Cmd. It should state at the bottem, Content Drawer (this is were you browse to the map folder to load the big city), output log and then the one we want called Cmd.
Once DLSS is installed there is a menu added to the button on the upper left hand side, just below viewport 1. It looks like three lines, one on top of the other. You can set the DLSS mode there, quality-ultra performance.
If the target card is AMD its easier, just turn off Lumen, turn on hardware RT (Standalone Ray Traced (Deprecated)) and leave TSR enabled.
Options ticked under Rendering within Project Setting found via the edit menu option.
Global Illumination
Changed Lumen to Standalone Ray Traced (Deprecated)
Reflections
Changed Lumen to Standalone Ray Traced (Deprecated)
Support global clip plane for Planar Reflections
Hardware Ray Tracing
Ray Traced Shadows
Ray Traced Skylight
Path Tracing
Default Settings
Here you can set the Anti-Aliasing Method. TSR, TAA, MSAA and FXAA. Set it to none for DLSS.
Once you have created a package with hardware RT enabled and Lumen disabled. DLSS set to quality. Then that will cause a massive performance boost. Should run well north of 60fps with decent hardware.
