im making progress.
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You have to have the latest version of Windows.
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You need the latest game ready drivers from Nvidia
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You need to launch UE4 with -dx12. — Create a shortcut executable for the engine. Right click it, go inside of it, after the .exe" add -dx12.
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Launch UE4. Now you will be able to select raytracing in project settings, and it defaults to activate skin shading something or other, requires a restart.
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Try some reflective materials. Set lights to movable… and you should be able to control the settings with a post process volume…
im getting some weird artifacting, but its ‘working’… Others are clearly having better results. But im trying to wrangle this amidst taking care of a toddler.
thats my result so far. People in the other thread are claiming its working, but at low FPS. So might wanna check out that thread… someonen posted a link to Nvidia’s blog instructions.
Good luck, keep me posted. im on 1080ti as well.
https://forums.unrealengine.com/development-discussion/rendering/1602647-rtx-on-gtx-cards/page3
Checkout post #33,