Hey guys just wondering if anyone else has experienced this problem of frame rate dropping to single digits on save file after playing the game for a while and if there's a fix,
Example starting a new game I get stable 60+ fps but after a few hours it starts dropping off till it hits about 6-10 fps.

My PC specs are
4930K Rampage Extreme IV
16gb ram
780ti


Installed Mods
FalloutNV.esm
DeadMoney.esm
HonestHearts.esm
OldWorldBlues.esm
LonesomeRoad.esm
GunRunnersArsenal.esm
CaravanPack.esm
ClassicPack.esm
MercenaryPack.esm
TribalPack.esm
Fallout3.esm
Anchorage.esm
ThePitt.esm
BrokenSteel.esm
PointLookout.esm
Zeta.esm
TaleOfTwoWastelands.esm
Detect Traps.esm
Inventory Access.esm
SomeguySeries.esm
Advanced Recon Tech.esm
oHUD.esm
XRE - CARS!.esm
TTWFixes.esm
TTW Flora Overhaul.esm
TTWInteriors_Core.esm
TTWInteriorsProject_Combo.esm
New Vegas Redesigned 3.esm
Mart's Mutant Mod.esm
Project Beauty.esm
Lings.esm
Gomorrah Redesigned.esp
WARZONES - Misanthropy Pure.esm
ELECTRO-CITY - CompletedWorkorders.esm
AWorldOfPain(Preview).esm
Momod.esm
Project Nevada - Core.esm
Project Nevada - Equipment.esm
Caliber.esm
CaliberXhonesthearts.esm
CaliberXgunrunners.esm
Project Nevada - Rebalance.esp
Weapons.of.the.New.Millenia.esm
ELECTRO-CITY - Highways and Byways.esm
RedRockRanch.esm
t6m_tale_of_two_wasteland_replacer.esp
Niner.esm
NVWillow.esp
The New Bison Steve Hotel.esm
Project Nevada - Cyberware.esp
WMVM.esm
DragsVGUArmorBase.esm
shadysandsshuffle.esp
BlackWolf Backpack - Vendor Script Replenish.esp
Performance Of The Gods.esp
LFox Magic Fingers Perk Level 24.esp
DarNifiedUINV.esp
The Mod Configuration Menu.esp
FlashlightNVSE.esp
FastSleepNV.esp
IntuitiveRealisticCooking.esp
JIP Companions Command & Control.esp
FPSWeaponWheel.esp
Centered 3rd Person Camera.esp
CASM.esp
ManualReload.esp
The Weapon Mod Menu.esp
Mojave Sandy Desert.esp
ManualReload-OldWorldBlues.esp
T3T_LCA_TTW_ImprovedWheatonArmory.esp
ShadowGasMaskBreathing.esp
theHeroNV_1.1.esp
Modified Combat Values v2.esp
T3T_LCA_TTW_ImprovedNtlGuardArmory.esp
WorkingCapPress.esp
Ultimate Invisible Wall Remover.esp
New Vegas Redesigned 3.esp
Marts Mod.esp
Loot Vehicles.esp
Zan_AutoPurge_SmartAgro_NV.esp
XRE - CARS!.esp
Weapons.esp
WeaponModsExpanded.esp
WMX-ArenovalisTextures.esp
UncutContent.esp
jsawyer.esp
BlackWolf Backpack.esp
MiscItemIconsNV.esp
NCR Legion Overhaul.esp
pnv.esp
EVE FNV - ALL DLC.esp
RWD-NV v1.3 [Alternative Version].esp
Project Nevada - TTW.esp
Companions.esp <<<< Just Niner and Delilah
Misc Armor.esp  
Armor I.esp
DestructionOverhaul.esp
Roberts_NewVegas.esp
NovaMod.esp
LingsPrettyThings.esp
dressup.esp
NewVegasBounties.esp
NewVegasBountiesII.esp
TheSinkRemodel.esp
TheInheritance.esp
fnvrwlo - original.esp
More Perks.esp
TTW_replacers.esp
TTW Perk Overhaul.esp
housemod.esp
Drags Armor Pack I.esp
Powered Power Armor.esp
T45d Power Armor Replacement - PN.esp
CONELRAD 640-1240.esp
Power Armors.esp
NewVegasKiller.esp
RRRAWOPCompatability.esp
The Groovatron NV.esp
ChucksWildWasteland.esp

Texture Mods
Poco Bueno and NMC

so yeah just wondering if this is a common problem or something else is causing it.

Thanks.

Wow. That load order is a little long. I would say instability with your load order is to be expected. I have a few questions about your problem:

Are you also running an ENB? (if so which one?)
Does your framerate go back to normal if you quit game and relaunch New Vegas?
What is your CPU clocked at?

Sometimes when I run an ENB, my framerate will tank really hard for no reason. However, if I look at the sky, the floor, or move around a bit my frame rate will jump back to solid 60.

If your fps goes back to normal after restarting your game, then this problem is normal. I've just never seen it to the extent that your are getting, and it may be due to your load order. Maybe someone else can chime in with some other ideas. These are just some problems that I've had over the years that sound similar to yours.

hey man thanks for the response I worked out that the save file itself had somehow become corrupted I think it had something to do with a depth of field effect added by project reality

Skyrim has a big like this one. It affected a number of my saves, I think. Had to start a new game. Should have backed them up. :/ Oh well. I haven't played it in the longest time..

Bummer. Maybe you can try cleaning the save? Also, might I recommend cutting down your load order. It might allow your saves to last a little bit longer. Then again, if you just like to mess around in the Fallout world then I suppose it doesn't really matter.

you could try merging some of the ESPs to reduce your load order as well. FNVedit is require as well as the merged mod plugins both are available on nexus. i dont recommend merging heavy mods together but the simpler one can be merge without too much of a hassle.