[hecifato]

I hear what you're saying, but keep in mind that Bethesda shipped Skyrim as 32-bit in 2011. It wasn't until the Special Edition release in 2016 that it was updated to 64. Now, obviously, we could chalk that up to it just being Bethesda.

[throwup238]

That’s because the 64bit upgrade to Creation Engine happened with the Fallout 4 development cycle when 64bit was widespread. Skyrim was also targeting Xbox 360 and PS3 which were still 32bit. FO4 is when the calculus changed for all the target platforms so thats when the engine was upgraded.