The first was the game lagging at 3FPS on both newly made and old saves which was fixed when I restarted.
But the next was a little more problematic and still lingers currently on every save even when newly created. The game's HUD is completely missing outside of the console dialogue, VATs and pop ups.
However in VATs something else entirely is off since I have the Fallout 3 condition bar instead of the one from New Vegas suddenly. (Pictured here)

Also it seems scripting itself is bugged due to this as like this video below: such as Orris not firing instantly, enemies failing to attack, and corpses glitching
https://www.youtube.com/watch?v=wQIOdE87Npc
Here is my load order that I've used
FalloutNV.esm
DeadMoney.esm
HonestHearts.esm
OldWorldBlues.esm
LonesomeRoad.esm
GunRunnersArsenal.esm
ClassicPack.esm
MercenaryPack.esm
TribalPack.esm
CaravanPack.esm
Fallout3.esm
Anchorage.esm
ThePitt.esm
BrokenSteel.esm
PointLookout.esm
Zeta.esm
TaleOfTwoWastelands.esm
FCOMaster.esm
Functional Post Game Ending.esm
AWorldOfPain(Preview).esm
AWorldOfPainFO3.esm
enclavebunker.esm
Lings.esm
MikotoBeauty.esm
Courier's Radio.esm
SomeguySeries.esm
Centered 3rd Person Camera - Unraised.esp
The Mod Configuration Menu.esp
Behaviours.esp
TTW Quick Start.esp
FCO - NPC Changes.esp
outsidebets.esp
LingsPrettyThings.esp
BennyReturns.esp
betsybrahmin.esp
DLCCompanions_1_3.esp
Functional Post Game Ending - Outside Bets Patch.esp
Western Sky - Darker Nights.esp
Western Sky.esp
Goodsprings Filler.esp
awilderwasteland.esp
TOUHOU NV.esp
AK47.esp
RagingBull.esp
mk46jtucker40lite.esp
mk46jtucker40full.esp
Ww2K98.esp
DWDEagle44.esp
PerkEveryLevel.esp
SignatureArmor.esp
SkilllessLockpick.esp
pipboy2500_edisleado.esp
Brotherhood and House Alliance.esp
FCO - GlowingOne.esp
MikotoBeauty.esp
Roberts_NewVegas.esp
FCO - Roberts Patch.esp
Lings-PlayableRaces.esp
A Better Cass.esp
LonesomeRoadScorchedSierraPowerHelmet.esp
Touhou.esp
Veronica Face Replacement.esp
GrimmsRadio.esp
MP5A4 and SWAT Gear.esp
KingOfTheRing.esp
MegaCityOneJudgeNV.esp
SaveCass.esp
Prior to this crash in the Follower's base the game worked perfectly fine with no hiccups at all, only to then have these issues making the game more or less unplayable.