Fallout New Vegas Cleansing Flame FPS Lag

[⚡DooM⚡]

For whatever reason, when using Cleansing Flame on an alive enemy will cut my FPS from a perfect 60 to 30-40 when shooting it and burning an enemy. It doesn't do this however when I shoot a corpse and light it on fire.

My changes to my game.
4GBFNV
NV Stutter Remover
NVAC
NVSE 5.0
Zan AutoPurge

Ini File: bUseThreadedAI=1 iNumHWThreads=2 fSunGlareSize=0.0000

I'm using no mods at all. My setup is a GTX 970, 16GB Ram, i7-6700. My GPU driver is at v368.81. I haven't found anyone with an issue like this on the internet yet so I haven't much a clue what is causing this.

[talgaby]

Probably the AI package that makes them run around screaming takes a while to load in. All these small background loads halve the framerate for a short while.

[⚡DooM⚡]

Originally posted by talgaby:

Probably the AI package that makes them run around screaming takes a while to load in. All these small background loads halve the framerate for a short while.

That would happen within a small cell? I first noticed it when shooting it at the Van Graffs inside their building after buying it to test it out. I thought it might of been the fact I was shooting at 3-4 npcs at the same time with the blue flame effect going and all but after I used it on a single npc and it still happened.

[Glitch]

This game really only utilizes up to two CPU cores. You have limited the amount of cores being used via an ini tweak to prevent crashing, but even without the tweak the game won't take advantage of 3+ core CPUs

[⚡DooM⚡]

Originally posted by Glitchman:

This game really only utilizes up to two CPU cores. You have limited the amount of cores being used via an ini tweak to prevent crashing, but even without the tweak the game won't take advantage of 3+ core CPUs

iNumHWThreads=2 is only 2 cores right?

[Our Savior]

this is when you have a mod and you shoot the enemies and they burt into flames? I get MASSIVE FPS drops with this. Its annoying af

[⚡DooM⚡]

Originally posted by Pansexual, trans windmill:

this is when you have a mod and you shoot the enemies and they burt into flames? I get MASSIVE FPS drops with this. Its annoying af

Um. I said that I was using no mods at all. 100% vanilla at max settings.

[talgaby]

Originally posted by Doom1991:

iNumHWThreads=2 is only 2 cores right?

Yes, but what he said is not exactly correct. The game itself uses one thread (which on i5 means one core, on new AMDs and i3/i7 CPUs it means half of a core) for almost everything, and you can delegate some of the additional tasks (actor spawning in the background, lip syncing, and such) to a second thread.
That thing you listed should control the physics engine though, which runs separately, is a piece of shit, but it can use any number of cores. It is generally advised to set it to 2 because, as I said, it is a piece of shit.

[⚡DooM⚡]

Originally posted by talgaby:

Originally posted by Doom1991:

iNumHWThreads=2 is only 2 cores right?

Yes, but what he said is not exactly correct. The game itself uses one thread (which on i5 means one core, on new AMDs and i3/i7 CPUs it means half of a core) for almost everything, and you can delegate some of the additional tasks (actor spawning in the background, lip syncing, and such) to a second thread.
That thing you listed should control the physics engine though, which runs separately, is a piece of shit, but it can use any number of cores. It is generally advised to set it to 2 because, as I said, it is a piece of shit.

I've been getting actors and objects rendering closer than I remember on console with my PC for some reason and I have it set to max. Wondering now if it has to do with iNumHWThreads=2 ...

[Bansheebutt]

DoT effects being constantly reapplied seem to put uneeded stress on the game.

I know the game also likes to skip upwards 15 frames if you hit several enemies at once with incendiary grenades.

[Corridor]

I know this is an old thread, but I was playing around with the Cleansing Flame earlier and I noticed it was happening. Here's what I have learned.
-Only the Cleansing Flame has this lag / frame drop, not the normal or upgraded Flamer.
-The lag is more apparent on larger enemies. Giant Radscorpions and Deathclaws will give off a lot of drops if you try to kill them with the Cleansing Flame, whereas a bloatfly, gecko and so on will not.
-Individual humans will generally not cause drops. However, setting multiple humans on fire at once will definitely cause it.
-Frame drops / lag will not happen if you spray fire at an enemy who is already on fire, but intentionally miss. Meaning the lag will only happen if you're actively hitting a target, even if all the same particle effects are still on-screen.
It seems to me that this is a game engine or software issue, or game bug rather than a hardware issue. Might be because of Windows, might have always been in New Vegas, just that nobody noticed.
Personally, I'm not sure how big of a deal it is. The Cleansing Flame, in my experience, may not even be better than the normal Flamer. It has lower damage per second as by design, but I don't think its significantly stronger skill-based burn damage is enough offset it, and from the unscientific method of counting ammo consumed per kill vs Giant Radscopions, the Cleansing Flame will need to fire more rounds of ammo for a kill than the regular Flamer.

[Salamand3r-]

Originally posted by Corridor:

I know this is an old thread, but I was playing around with the Cleansing Flame earlier and I noticed it was happening. Here's what I have learned.
-Only the Cleansing Flame has this lag / frame drop, not the normal or upgraded Flamer.
-The lag is more apparent on larger enemies. Giant Radscorpions and Deathclaws will give off a lot of drops if you try to kill them with the Cleansing Flame, whereas a bloatfly, gecko and so on will not.
-Individual humans will generally not cause drops. However, setting multiple humans on fire at once will definitely cause it.
-Frame drops / lag will not happen if you spray fire at an enemy who is already on fire, but intentionally miss. Meaning the lag will only happen if you're actively hitting a target, even if all the same particle effects are still on-screen.
It seems to me that this is a game engine or software issue, or game bug rather than a hardware issue. Might be because of Windows, might have always been in New Vegas, just that nobody noticed.
Personally, I'm not sure how big of a deal it is. The Cleansing Flame, in my experience, may not even be better than the normal Flamer. It has lower damage per second as by design, but I don't think its significantly stronger skill-based burn damage is enough offset it, and from the unscientific method of counting ammo consumed per kill vs Giant Radscopions, the Cleansing Flame will need to fire more rounds of ammo for a kill than the regular Flamer.

It's probably a bad script in that one specific instance since it doesn't happen on other flamers.

I would bet a fair few dollars that YUP or one of the other common bugfix mods have fixed that.

[Befuddled Honey Badger]

Originally posted by Salamand3r-:

It's probably a bad script in that one specific instance since it doesn't happen on other flamers.

I would bet a fair few dollars that YUP or one of the other common bugfix mods have fixed that.

Nope. I use YUP and it happens with normal Flamers and Cleansing Flame, although with the normal Flamers it's not as bad as with Cleansing Flame.

[Salamand3r-]

Originally posted by Befuddled Honey Badger:

Originally posted by Salamand3r-:

It's probably a bad script in that one specific instance since it doesn't happen on other flamers.

I would bet a fair few dollars that YUP or one of the other common bugfix mods have fixed that.

Nope. I use YUP and it happens with normal Flamers and Cleansing Flame, although with the normal Flamers it's not as bad as with Cleansing Flame.

Huh. I haven't seen that issue in years, so I assumed it was a YUP fix. I suppose it could be any number of the various fixes and performance/stability mods over the years though.