Updated for v1.22!
I Haven't tested every single weight buff on the new patch but it should work like it did before.

Modifies playerWitcher.ws (used by a lot of mods), so you might need to merge scripts with Script Merger after installation!

This is my first mod ever so please bear with me if there are any issues with installation and whatnot..
Extra Weight Limit adds a bonus to your weight limit without "ruining the immersion".
This mod is for people who like to pick up stuff but still want to restrict their freedom a little bit.

For example, if you have 160 weight limit and install the 120+ version, your TOTAL max weight will be increased to 280
You can essentially consider the mod as adding another saddle to Roach or something :)

Should be compatible with every weight limit enhancement in the game, so the new saddle you picked up wont be useless as it is with other mods.

Personally I am using +120, but pick whatever version you like.

If you want your own value it's very easy to change yourself (instructions below), but I made a few versions for people who don't want to edit script files.

It's a very basic mod but I couldn't find any mod that did what I wanted so I decided to upload it. 
(I didn't want 90k weight, and I wanted items to still affect my weight limit.)

There might be some cleaner way to accomplish what this mod does, but it seems to work fine and I don't see how the method I used would cause any issues.

Let me know if you have any problems or if you want any other extra weight version uploaded.
It shouldn't be hard updating it for new versions of Witcher 3 so I will try to keep it up-to-date

Anyway enjoy it :)

MOD COMPATIBILITY:
As this mod is very simple, it shouldn't really conflict with any other mods as long as you've used Script Merger properly.
Unless they also edit the weight limit of course..
But let me know if it conflicts with any of your mods and I'll try to help you solve it.

Note: replace 120 in the file name with whatever number version you downloaded
INSTALLATION:
Install & enable with Nexus Mod Manager as usual
OR
unpack modExtraWeight120 into /WITCHER INSTALLATION PATH/Mods/

RUN SCRIPT MERGER TO AVOID CONFLICTS! Script Merger

UNINSTALLATION:
Disable & remove in Nexus Mod Manager
OR
remove the modExtraWeight120 folder from /WITCHER INSTALLATION PATH/Mods/

**["ADVANCED"] SET YOUR OWN CUSTOM BONUS:**After installing the mod, open up this file in notepad or a similar program
/WITCHER INSTALLATION PATH/Mods/modExtraWeight120/content/scripts/game/player/playerWitcher.ws

Search (ctrl+f?) for the section starting with "public function GetMaxRunEncumbrance"

Modify the value at the bottom of this section to whatever bonus you want, it's 120 in the screenshot
MAKE SURE YOU DON'T REMOVE THE SEMICOLON AT THE END! >> ; <<

Save the file, merge your scripts again, and you should have your custom weight bonus applied next time you run the game