This is a relight of the incredibly detailed King Wash Laundromat environment by Clinton Crumpler (Dekogon Studios): https://www.unrealengine.com/marketplace/en-US/product/king-wash-laundromat-interior-city-scene. This relight uses static, baked lighting so performance is very good. All post-processing is done in engine using Unreal's colour grading tools and a custom LUT.