Unity & Kerbal Space Program.

Hello all, new to the forums, just joined to find some help with a problem i am having. I am currently runing a modded KSP game, and have had to set it run the .exe with -force-opengl in order to get it to load and play without crashing due to all my mods.
My question is this, what does running unity in opengl do to reduce my memory footprint by so much?
Also the game does not load up the settings menu from the main menu, it just hangs with the loading icon in the bottom corner, and the textures, particularly on writing, when in the game, look a bit… fuzzy, and the AA does not seem to work as well.
If anyone can offer me some help and advice on these problems i would be very greatful.
Thank you.

Since this Forum is mostly about the Unity Engine/Editor in General, you might wanna contact the Developers of Kerbal Space Programm instead: https://kerbalspaceprogram.com/contact.php