Fps issues when updateing to 3.3.1 from 3.3

[SPITSPHIRE]

I started my current playthrough in 3.3 and only just recently updated to the 3.3.1 update.

Since updateing, interior cells that would before be a steady 56-60 fps now drop into the 20-30 fps range and i get massive stuttering and lag when looking in certain directions in some cells.
My load order has remained the same between updateing.

anyone know what the issue could be?

load order:

# This file was automatically generated by Mod Organizer.
FalloutNV.esm
DeadMoney.esm
HonestHearts.esm
OldWorldBlues.esm
LonesomeRoad.esm
GunRunnersArsenal.esm
Fallout3.esm
Anchorage.esm
ThePitt.esm
BrokenSteel.esm
PointLookout.esm
Zeta.esm
CaravanPack.esm
ClassicPack.esm
MercenaryPack.esm
TribalPack.esm
TaleOfTwoWastelands.esm
YUPTTW.esm
Advanced Recon Tech.esm
Animated Player Interactions.esm
Functional Post Game Ending.esm
Street Lights TTW.esm
TLD_Travelers.esm
AWorldOfPainFO3.esm
AnotherInteriorMod.esm
ClimateControl.esm
Detect Traps.esm
Helmet Overlay.esm
ISControl.esm
TTW Canopy Shadows Restoration.esm
Two Wastelands Redesigned.esm
A World of Pain Revised.esm
The New Bison Steve Hotel.esm
Cyberware.esm
Afterschool Special.esm
Tenpenny Tower Quest - Redux.esm
WMVM.esm
Root 'n Loot.esp
DNWeathers.esp
Mojave Raiders.esp
Mojave Wildlife (FO3-Style).esp
TTWMergedQuests.esp
PlayerHomeImprovement.esp
FPGE Patch - Mojave Raiders.esp
Functional Post Game Ending - TTW Patch.esp
FPGE Patch - AWOP Revised.esp
DC Uniques.esp
DelayDLCRedux.esp
ADAM Complete.esp
ADAM - MAIN.esp
ADAM - Nemesis Armor Pack.esp
zeta_fast_travel_ttw.esp
ADAM - Rangers on Patrol.esp
AutoGatesRedux.esp
TTWTransportalponderEx.esp
AWOPR - TLD Patch.esp
Mojave Raiders - TLD Patch.esp
PreOrderGearPlacement.esp
ADAM - Outcast Ranger Armor.esp
ADAM - Manual Patch.esp
Advanced Recon - Manual Patch.esp
Cyberware TTW.esp
Advanced Recon Armor.esp
Advanced Recon Gear.esp
Advanced Recon Gear - TTW Locations.esp
Advanced Recon Armor - TTW Locations.esp
Advanced Recon Armor-Easier Stealth.esp
Advanced Recon Patches.esp
Afterschool Special Improved Lighting.esp
Animated Ingestibles.esp
AWOP4FO3 Manual Patch.esp
CasualPointLookout.esp
Conelrad 640-1240.esp
CyberJAM.esp
Cyberware OWB.esp
DetachedBeams.esp
Detect Traps - Perk.esp
Detect Traps - Traponator 4000.esp
DN Realism.esp
Dogmeat is unique.esp
Dynamic Camera.esp
FO3 Voice Modulation.esp
Handloader Plus.esp
Heat Haze.esp
ImmersiveRecoil.esp
JIP Companions Command & Control.esp
JIP Improved Recipe Menu.esp
JustAssortedMods.esp
MigNammo.esp
Mojave Raiders - 22LR Varmint Rifle.esp
RepairKit.esp
RetrievableThrowables.esp
The Mod Configuration Menu.esp
TTW - Essential Travelling Merchants.esp
TTW Unlock Hardcore Perk Rate.esp
TTWNoFactionArmors.esp
Vanilla UI Plus.esp
WeaponJammingNoReloadJams.esp
YUP-NewBisonSteve.esp
TTWZetaRewards.esp
Wasteland Starting Gear DC.esp
TTW AWOP4FO3 - No Starter Terminal.esp
BLEED.esp
DN Weathers Patch.esp
WastelandRearmamentProject.esp

[RoyBatty]

No idea, nothing was changed that should or could affect frame rate.