Everything was going so well with my testing too... I only have one problem, crashing when I enter buildings. It doesn't happen every time but it does most of the time. Furthermore, it doesn't happen when I leave the building...

NVAC reports this:
19200124 ; NiDX9SourceTextureData::CreateSurf> Failed CreateImageSurface - E_OUTOFMEMORY
19200130 ; NiDX9SourceTextureData::CreateSurf> Failed CreateImageSurface - E_OUTOFMEMORY
19200137 ; NiDX9SourceTextureData::CreateSurf> Failed CreateImageSurface - E_OUTOFMEMORY
19200137 ; N~
TRUNCATE _
19200146 h 00EC461C 89448FF4 FalloutNV.exe
19200146 h 00EC4624 89448FF8 FalloutNV.exe
19200146 h 00EC462C 89448FFC FalloutNV.exe

Load Order: https://wordpad.cc/tnHtSN1O

Thanks in advance for any help!

Edit: Update: I could be wrong but I think I figured it out. Take a look at Chet's shop here: https://imgur.com/XPoZQXw
This is the one time I could get in with no crashes and as you can see, some of the shop is in black... This has to be a texture problem, right? All I use is NMC medium texture pack combined with Poco Bueno. I have now redownloaded and reinstalled both from fresh but the problem still persists. That said, this mod list is extremely similar to one I used not too long ago and I had no issue like this...

Okay, I solved it 100%! If like me you follow the SinitarGaming guide over the years, you might notice he has updated it to recommend downloading this mod: "https://www.nexusmods.com/newvegas/mods/69779" That mod caused this issue and as soon as I deleted it, no more crashes. And I tested this A LOT to make sure! My game works incredibly now.

Hey! Sorry to post on a topic you've already fixed. Just wanted to say for others who may have seen this that I had similar issues for a very long time and like cyberjynx I did a massive amount of testing, even making a few comments on elsewhere with my findings believing it to be the same thing, issues between NMC specifically and or OJO and NVHR, (definitely follow community recommendations and use the medium or small packs that much I tested to be certain or even with a beast PC it's gonna cause crashes) but I've since done a lot more testing, after multiple fresh installs. What I've found still isn't concrete but I believe it's a driver or memory issue of some sort possibly from using an outdated version of either JIP or NVSE in tandem with NVHR. For those having this issue not wanting to get rid of NVHR try using the "Modify DX Behavior" tweak in NVTF along with the "D3D9 Manage resources" tweak. This fixed a number of out of memory and script failure errors for me along with the interior crashes. I know it isn't an issue with NVHR though as I now run around 100 plugins including NMC and Poco with NVHR and my performance is fine.

I've found merging Texture packs manually outside of your Mod manager (If you use one) and adding them from archives to be a better practice than having several mods overwrite each other back and forth to be beneficial as well, for the sack of reducing the overall size of load order it doesn't hurt either.