NVRTX 5.1 caustics review (ish)

Hello @jblackwell , thanks for your feedback. Apologize for the artist unfriendly UI, there are indeed tones of parameters need to be tweaked both from Cvar or from PPV, however, if you check the demo project, there is a blueprint called BP_RTX under Content folder to scale entire HW raytracing rendering settings, coz it is significantly crucial to scale the rendering quality among different hardware platforms. You can check the existed rendering quality preset for your reference, and then make your own one based on your map scenario by changing the structure default variables. The engineers here are very good at math equations but very pool usability UI design, moreover, change UE UI cost so much time to rebuild engine over and over. So I warped the recommended parameter settings into that BP.

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