The Ultimate Doom is the ultimate game and now it's received a ray tracing upgrade? But how do you add RT to a game that doesn't actually have anything like a modern lighting model? What does this upgrade actually do, how does it work and what level of performance can you get from the best and the worst Nvidia RTX cards? Alex investigates.

Go here for the mod: https://github.com/sultimt/prboompl...

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