If you have some missing mesh warnings at character creator AND you already have the right load order.

What's happening it's that you selected a female only race, but while exploring the character creation menu, it changed to MALE. Just make it FEMALE again.

Engine limitation. Either lock your characters inside their building or steal any and all relevant loose items to avoid so your characters have nothing to steal.

Additional tip. Never set the job hauler or builder/engineer while living inside a town. Characters with those jobs would prefer to steal items instead of using the resources at disposal.

There's a Corpse furnace from UWE that spawn inside a building. The patch needs to be updated to latest UWE version.

It's because 'Native Stylise' default settings. Tweak it to your heart content or unsubscribe from it.

You didn't do the proper research.

You need 'Mounted Crossbows' and 'Leather Armour Crafting' to unlock 'Crossbow Turret Strings'

You need 'Crossbow Turret Strings' and 'Crossbow Crafting' to unlock 'Composite Runners'

You need 'Basic Weapon Smithing' to unlock 'Crossbow Bolts' which unlocks 'Mounted Crossbows' and 'Crossbow Crafting'.

Now

'Mounted Crossbows II' requires 'Mounted Crossbows' and 'Crossbow Crafting'.

'Prototype Harpoon Turrets' requires 'Mounted Crossbows II', 'Composite Runners' and 'Crossbow Turret Strings'.

'Harpoon Turrets mkII' requires 'Prototype Harpoon Turrets'.

'Advanced Harpoonery' requires 'Harpoon Turrets mkII'.

and so on...

With UWE, Tech Level 5 requires the 'Advanced Outposts' blueprint that is sold at Mechanical Shops. Do all the research needed so you can learn from that blueprint so the rest of the research tree and Tech Level 5 research appears at your menu.

A more detailed explanation:

Tech Level 5
Blueprint only: False
Level: 4
Category: Core
Requirements: Outpost Type IV

Outpost Type IV
Blueprint only: False
Level: 4
Category: Core
Requirements: Outpost Type III and Heavy Building Foundations

Outpost Type III
Blueprint only: False
Level: 3
Category: Core
Requirements: Advanced Outpost Blueprints and Heavy Building Foundations

Advanced Outpost Blueprints
Blueprint only: TRUE
Level: 3
Category: Core
Requirements: Medium Building Shells and Large Building Shells

You downloaded the wrong version of 'Nice Textures Collection (without map and ui)'.

YOU MUST DOWNLOAD THE VERSION WITHOUT MAP AND UI

TO-DO: Potentially unlocking a even more fluid experience.

it's this software

https://store.steampowered.com/app/993090/Lossless_Scaling/
They recently updated the feature LSFG, it works similarly to the DLSS 4 multi frame generator from Nvidia that's only available for the RTX 50xx series, I don't know much about the technical details but here are the update notes:
https://store.steampowered.com/news/app/993090/view/527583567913419235

I took a screenshot of the config i'm using now for Kenshi with your modpack
https://imagizer.imageshack.com/img922/9800/YKRjIv.png
Use this config and click "settings" and set a Hotkey (by default it's ALT + shift + S)
-Run Kenshi load into the game.
-then Alt Tab back to LossLess Scaling and click "Scale" on the top right corner.
-Then Alt tab back to Kenshi
the settings will be applied and can be deactivated/activated instantly by pressing the Hotkey.

A good way to test it is going to a very crowded area, zooming out, and making a comparison.

For lower end PC, setting the LSFG mode to X3 or X4 instead of X2 will give even more FPS, but the game will look ugly/blurry
it may be possible to tweak the other settings for better results, I didn't look too much into it.

https://imagizer.imageshack.com/img923/4642/Zbq1fw.png
more detailed settings of my previous post... getting 60-70 fps on the town of Heng

_____________

Thanks @Rocki