My load order:

FalloutNV.esmDeadMoney.esmHonestHearts.esmAmbient Temperature.esmFNVToolkit.esmAdvanced Recon Tech.esmCompanionInfAmmo.esmPrimary Needs HUD.esmIWS-Core.esmAWorldOfPain(Preview).esmiHUD.esmELECTRO-CITY - CompletedWorkorders.esmDarNifiedUINV.espCASM.espArwen_Camera.espReadius_NV.espUHNV.espArwen_NV_Realism_Core.espArwen_NV_Med-Tec.espCONELRAD 640-1240.espDog_City3.espNewVegasBounties.espNewVegasBountiesII.espCasino Exchange All.espDK_BulletTime_NV.espIWS-Core-Patrols.espIWS-Core-Guards.espmojave music radio expanded v1.1.espOven Cooking.espAdvanced Recon Gear.espAdvanced Recon Tech.espRHINO45-70MX_NV.espAdvanced Recon Armor.espAdvanced Recon Armor-No Stealth Field.espAdvanced Recon Range Finder.espAirForceArmorT57C.espRCSS.espKnivesGhostSR.espFallout Tactics Laser Rifle.espShilohDS-Color Maps and Icons.espBullet Impact Increased LOD.espNV Cass Hat & Outfit Playable.espGrenadeHotkey.espGrenadeHotkey - DeadMoney.espRealistic death.espWeaponModsixpanded.espWMX-DeadMoney.espWMX-HonestHearts.espWMX-ArenovalisTextures.espWMX-AWOP Patch.espMail Order Catalogs.espMail Order Catalogs DLC01.espMail Order Catalogs DLC02.espMail Order Catalogs WMX.espMail Order Catalogs DLC01 WMX.espMail Order Catalogs DLC02 WMX.espVurt's WFO.espNevada Skies - URWLHH.esp

Main problem is that scorpions, almost all of them, crawl under the earth surface. That cause very bad looking trouble after they dies... Their textures and models become stretched and shaky.

Another one problem is game crush on entering or leaving different buildings.

The scropions are a bug that was in the game to begin with. The crashing was added in the last patch, http://www.gamesas.com/index.php?/topic/1198448-frequent-loading-screen-freezing/ for speculation about the problem.