The files will help you run fallout 4 on low spec computers even on some of the intel hd graphics
Seriously I was able to archive 60 fps with just the config file alone on intel hd 4600 mobile-without low texture mods
Before downloading the low texture mods check and see if the config file helps you.
Highly Recommended to get the most performance out of your pc or laptop
1 https://www.nexusmods.com/fallout4/mods/606 By Darth Animal (reduces textures and still maintains some visual quality)
2 https://www.nexusmods.com/fallout4/mods/102/ by bilago- this mod is great for tweaking
3 https://www.nexusmods.com/fallout4/mods/9835/? by AKcelsior removes unnecessary objects
If you care about achievements download this mod
4 https://www.nexusmods.com/fallout4/mods/12465 by expired6978 (Requires F4SE)
If the 512 texture reduction didn't work
https://www.nexusmods.com/fallout4/mods/4881/? by Esipode This will make your game look even worse then it did before but will help decree V-ram usage significantly (This will reduce your textures to the point where they look like they haven loaded in use as a last resort)
intel cpu's are more powerful but often come with intel hd witch is very week when amd has weaker cpu's but better graphics
Intel hd driver-https://www.intel.com/content/www/us/en/support/detect.html
My recommendations
Change the gpu settings to performance
for AMD users the minimum amount of cpu cores is 4
For Intel users if you have a I5 or a I7 I would recommend buying a cheep graphics card when you get the money because they are good cpu's but only if you have a desktop (don't go any lower then a GT 1030)(Also keep in mind that if you have a regular pc you should get a low profile gpu like the GT 1030 or the low profile GTX 1050-Low profile gpu's don't require power pin connecters.
Use an ssd to help increase the slow load time
8GB ram
If you still cant achieve a stable frame rate download the mods above I recommended do it
Note if your ok with lower fps try lowering your refresh rate-V-sync will cap he fps based on your refresh rate
Witch low spec cpu/gpu I think works better
Personally I think intel performs better because of the faster cpu even know it has very week gpu power the tweaks will help that.
Do I have a problem with AMD
No I do not my personal gamming pc has a amd cpu. But the common AMD cpu's in laptops and desktops are much weaker than the common Intel cpu's.
If all this fails you should save up for a new pc
I got the inspiration to make this mod after watching Low Spec Gamer run fallout 4 on a Intel Celeron with the integrated Intel hd Graphics https://www.youtube.com/watch?v=Hb_5MU5NTRg&t=293s
Yes he uploaded his config file on his channel but I was unable to get it to work so I made my own
I was unable to get the upscale mod to work