Strange weapon placement delay when switching ironsight mode off

[Simonxz06]

I'm having this glitch where the weapon model (in this case the silenced .22 pistol) keeps staying for a brief time in ironsight mode while the hand and arm model goes quickly back as it normally should.
My modlist:

 

FalloutNV.esm

DeadMoney.esm

HonestHearts.esm

OldWorldBlues.esm

LonesomeRoad.esm

GunRunnersArsenal.esm

ClassicPack.esm

MercenaryPack.esm

TribalPack.esm

CaravanPack.esm

YUP - Base Game + All DLC.esm

oHUD.esm

More Perks.esm

YUP - NPC Fixes (Base Game + All DLC).esp

Unofficial Patch NVSE Plus.esp

FOVSlider.esp

Simple Saves.esp

DarNifiedUINV.esp

The Mod Configuration Menu.esp

JIP Improved Recipe Menu.esp

JustAssortedMods.esp

Universal Item Sorter.esp

Dynamic Pipboy Light.esp

Clarity.esp

DYNAVISION 3.esp

Uncut Wasteland.esp

JSawyer Ultimate.esp

WMIMNV.esp

Mojave Raiders.esp

Mojave Wildlife (FO3-Style + No Chanced).esp

Equipment Restoration Project.esp

DisableMuzzleFlashLights.esp

JSawyer Ultimate - ERP Patch.esp

Mojave Arsenal.esp

JSawyer Ultimate - Mojave Arsenal Patch (GRA Merged).esp

Weapon Retexture Project.esp

JSawyer Ultimate - Mojave Raiders Patch.esp

BLEEDNV.esp

BLEEDNV - UPNVSE+ Patch.esp

Immersive Minigames.esp

More Perks Update.esp

MusicPackRNV.esp

Simple DLC Delay.esp

Simple Interior Lighting.esp

Better Character Creation.esp

Economy Overhaul.esp

Follower Tweaks.esp

B42Inertia.esp

ImmersiveRecoil.esp

Altitude.esp

 

Thanks in advance for your help!

Edit: Apparently it was iStewieTweaks custom ini from Viva New Vegas that was causing the issue

Edited July 28, 2021 by Simonxz06