Resizable BAR Mod means anything for us?

[EaglePPP]

So I was watchig Daniel Owen's GPU news today and he posted there is a mod to enabling resizable bar on older hardwares. Yet I dont really understand the techs of this, anyone clever enough mind to elaborate?

Resizeable BAR mod for older gaming PCs, said to deliver up to 12% more performance, could breath a little more life into systems as old as Sandy Bridge | PC Gamer
https://www.pcgamer.com/resizeable-bar-mod-for-older-gaming-pcs-said-to-deliver-up-to-12-more-performance-could-breath-a-little-more-life-into-systems-as-old-as-sandy-bridge/

[AleksCore]

There is not so much to understand about Resizable BAR. By default CPU can communicate with video memory by sending 256 KB blocks of data, resizable bar make the block size dynamic so one block can reach size up to 64 MB. That basically makes information to pass faster. Well, at least it's how I understand it. From my personal experience I play Fortnite and each new season there is new map which results into shaders caching first time you playing it. It is sadly caching during playing which cause fps problems (serious stutters). With ReBAR enabled this stutters completely disappear for me. It still load CPU a lot but no stutters. Guess there is so much data so 256 KB blocks simply not enough and it cause stutters when queue of data is too big it just can't keep up. I am not programmer and I don't have IT education tho, but that's my experience and that's what I learned from Google. I don't really see cases when it can improve FPS, but what I see it can eliminate stuttering in games with Unreal Engine and potentially other games