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FNV Sudden Frame Drop on New Game


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I recently decided to reinstall FNV and start a modded playthrough, and everything was going great up until today.  The game ran fine on ultra settings with no issues; the framerate remained high and stable, and there was no ticking/stuttering to be found.

Then today, I remembered that I hadn't installed any mods that open up the Strip, so I decided to download and install Simple Open Strip (https://www.nexusmods.com/newvegas/mods/73127) and the associated patch for Desert Natural Weathers (https://www.nexusmods.com/newvegas/mods/83335), which I also use.  This turned out to be a mistake, as I read that the mod came with numerous bugs and was not compatible with NMC's Textures (https://www.nexusmods.com/newvegas/mods/43135) and their LOD replacer (https://www.nexusmods.com/newvegas/mods/67649).  So, I deleted the Open Strip mods (archive included), then turned Archive Invalidation off and back on.  Since said mod requires a new game to work after installing or uninstalling, I deleted my old saves then started a new game and finished character creation.

I immediately experienced severe frame drops, with the game running around 20fps compared to around 60 prior to installing and uninstalling these mods.  Thinking it might be an archive issue, I turned Archive Invalidation on and off in Vortex (I understand that using Vortex to mod FNV is considered taboo, but I have not had any issues with it thus far and it's the most convenient for me), to no avail.  I then purged and redeployed my mods in Vortex, making a few adjustments to load order to see if that would have an effect.  Nada.  I checked my files for anything that might be left over, and sure enough, I found that the LOD files from Simple Open Strip had not been deleted.  I went in and deleted them manually, then deleted and reinstalled the NMC LOD mod to make sure it wasn't causing problems, repeating the previous steps afterwards.  Again, no effect.  I also saw that a few mods I had installed, namely JohnnyGuitar xNVSE and Titans of the New West, needed an update, so I tried that with no success either.

The frame drops have persisted, and are even worse on starting a new game:  straight out of the opening cinematic I get about 5-10fps without fail, and nothing I have done has changed that.  Is there anything I can do besides uninstalling and reinstalling the game and all my mods?

If it would help, I can post the load order for my plugins and the deploy order for my mods in Vortex.

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A lot of performance issues are fixed with a quick restart, it's worth doing anyway if the PC has been running for a while. 

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Yeah, especially when you think you have the rig for your 200+ load order list, but, you know, you dont have that rig~

Anyway, people advise agaisnt Vortex + FNV for a very good reason and very long history. You just wait until Vortex problem start hounding you~

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