I noticed enabling the FPS Boost on Fallout 4 seems to lower the resolution. The 60FPS mod however let's it run dynamic 4k. The frame rate is also stable for me too.
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FALLOUT 76 Closed Beta Access (PS4) cheap - Price of $
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Fallout 76 | PS5 Gameplay | 1440p 30 FPS | PS4 Version - YouTube
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Fallout 76 Windows, XONE, PS4 game - ModDB
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