How do I get Fallout 4 to actually keep a consistent framerate

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.

My framerate keeps tanking whenever I go near Quincy, any thoughts or solutions? : r/fo4

Remove Fallout 4 60 FPS Limit & Mouse Acceleration

Community Shaders so impressive to me; never dropped below 60 fps on my 3070ti laptop, whereas with ENB I probably wpould struggle to get 30 consistently : r/SkyrimPorn

Smoothout - 2023 FO4 Ultimate FPS and Optimization Guide at Fallout 4 Nexus - Mods and community

Performance Analysis: Fallout 4

Performance Analysis: Fallout 4 PS4 & Xbox One Has Issues Holding 30fps, Smoother Experience Is on PS4

Getting constant stutter but FPS is stable. Drops are when I have gone into the menu, can anyone please explain/help? - i7 8700k OC 4.5Ghz, RTX 3080, 16GB RAM, Samsung 970 M.2

Xbox Series X/S' FPS Boost Might Lower Some Games' Resolution to Boost Performance

How do I get Fallout 4 to actually keep a consistent framerate? - Page 2 - PC Gaming - Linus Tech Tips

What does it take to run Fallout 4 at 1080p60?