How to level up fast in fallout 4 with all DLC in 2020? Get x20 experience multiplier!!! Here is the quick video about max possible intelligence and max possible experience multiplier in Fallout 4.
To reach the goal i used armor, consumables, buffs, perks which boosts intelligence and experience multiplier including idiot savant as last sequence multiplier. Hope you'll enjoy it. If I miss something, you have suggestions or just want to chat, welcome to comments. Summary table with all items used is at 5:03.