Well lets assume temperature is the culprit, then why doesnt it affect Oblivion and Fallout 3 or even a game like Crysis? Also my previous Macbook ran a lot hotter (and the one before that nearly reached 100°C!...

)
With those i didnt get the issue either. Whenever i remove "any" mod, the problem seems to go away though. I think my game does have some problem with the amount of mods i am using...
What about the Merged Patch ? Could this be the problem ?
Edit : I attached my load order, maybe something is wrong with that too... (That happens when you leave those games for a little while - you forget the right order

)
FalloutNV.esm
ClassicPack.esm
DeadMoney.esm
HonestHearts.esm
New Vegas Redesigned.esm
IWR.esm
Community Bugfix Compilation Patch.esm
CBC Dead Money Patch.esm
Project Nevada - Core.esm
Project Nevada - Equipment.esm
Lings.esm
RZW_Master.esm
RZW_Portables.esm
More Perks.esm
More Traits.esm
Caliber.esm
CFWNV-DLC.esm
CHEMS.esm
RH_IRONSIGHTS_NV.esm
NVR-Strip.esm
rePopulated Wasteland.esm
Run the Lucky 38.esm
Vault21HotelRoomUpgrade.esm
Vault24_08.esm
ELECTRO-CITY - CompletedWorkorders.esm
ELECTRO-CITY - Highways and Byways.esm
Ambient Temperature.esm
iHUD.esm
aHUD.esm
CINEMATECH.esm
Primary Needs HUD.esm
wsix.esm
NV GameStabilizerA8.esm
IWR - Rebuilt.esp
DarNifiedUINV.esp
CorpseEquip.esp
Community Bugfix Compilation Patch.esp
Weathered10mmFixes.esp
Vurt's WFO.esp
RustTownV1-1.esp
Novac Hotel Suite Upgrade.esp
GunRunnersixpandedV3.6.esp
Bobblehunt.esp
CHEMS - Benches.esp
CHEMS - Basic Chems.esp
UHNV.esp
UHNV-Dead Money.esp
UHNV-Honest Hearts.esp
UHNV-Chems.esp
UHNV-Bobblehunt.esp
The New Bison Steve Hotel.esp
Underground Home.esp
Vault24_08.esp
Reactive People - Ultimatum.esp
CONELRAD 640-1240.esp
R.A.C.E. Station.esp
The Mod Configuration Menu.esp
More Traits Update.esp
More Perks Update.esp
Passive Animals & Critters - A Perk Suite.esp
Mojave Express Expansion.esp
Kobu's Primary Attributes Uncapper.esp
populatedcasino-medium.esp
PortableCampsite.esp
Respawning Containers.esp
SlaveCollarCrafting.esp
Better Ammo Crafting.esp
WeaponModsixpanded.esp
WMX-DeadMoney.esp
WMX-HonestHearts.esp
Project Nevada - Cyberware.esp
Project Nevada - Rebalance.esp
Project Nevada - WMX.esp
Project Nevada - Dead Money.esp
Project Nevada - Honest Hearts.esp
SCAMP - Scrapping Clutter And Making Parts.esp
Bountiful Harvest.esp
QS_Blackwolf_NV_Backpackmod.esp
Kobu's Sortable Crafting Backpack.esp
LibrarianOfTheWastes.esp
bzArmour.esp
bzBodySuits.esp
NEVECbodysuit.esp
Tailor Maid - NV.esp
Tailor Maid Black Retex - NV.esp
formalbattledress.esp
WastelandCourier.esp
AsharasFormalClothing.esp
NWghostbodysuit.esp
Lingerie.esp
RZW_RecordCollection.esp
RZW_VideoCollection.esp
RZW_BookCollection.esp
Luger.esp
Companion Sandbox Mode.esp
T3T_MiscItemIconsNV.esp
First_Person_Gun_No_Follow.esp
UnderwaterFX.esp
UWFXGodrays.esp
Interior Lighting Overhaul-Realistic Interiors-Full.esp
Nevada Skies - URWLified.esp
ELECTRO-CITY - Darker Nights.esp
ELECTRO-CITY - Imaginator.esp
ILO-RI-Original Lucky38 Suite.esp
ILO-RI-Dead Money.esp
ILO-RI-Honest Hearts.esp
Lucky 38 Suite Expansion.esp
DYNAVISION 2 - Dynamic Lens Effect.esp
Ambient Temperature - URWLified Nevada Skies.esp
RecallDevice.esp
The Groovatron NV.esp
Big Band Radio.esp
RNVExtended[100+GNR]v3b1.esp
SierraMadrev2.0.esp
NVR-SMOTS-V2-Version_10.esp
NVR-SMOTS_ELECTRO-CITY_Patch.esp
NVR-NPCs.esp
NVR_rePopulated Wasteland_Patch.esp
Jacobstown Expanded.esp
RechamberedWeapons.esp
BottleBrahminMilkNV12.esp
Free Tribal Outfits.esp
HaveAQuantum.esp
NVmorecactuswater.esp
Oven Cooking.esp
Realistic Weight Overhaul.esp
NukaChemistPlus.esp
Solar's Bottled Water.esp
Project Nevada - Rebalance - Compatibility.esp
IntuitiveRealisticCooking.esp
SS.esp
NVWillow.esp
FPT EDE 2BetaLingsBrunette.esp
Cafe Of Broken Dreams - Jericho.esp
Cafe Of Broken Dreams - Dogmeat.esp
RH_IronSights_NV_Vanilla.esp
FNNsysNV.esp
Portable Tent.esp
Portable Tent - Time For Bed.esp
Portable Tent - Bobbleheads.esp
HUD Extended - Ambient Temperature.esp
wsixInnuendoAnims.esp
wsixInnuendoNPCs.esp
wsix_compatibility.esp
Merged Patch.esp
Total active plugins: 145
Total plugins: 151