Here's a weird one: CTD in Windhelm, but only on saving

[skullsridge]

So, yeah, this one is a toughie, y'all. I can enter/load Windhelm just fine from any entrance, but the moment my game saves in or near Windhelm, my game crashes to the desktop. I'm utterly confounded by this new development, as this is something entirely new, with no mods (outside of 3DNPCs and mesh enhancer) directly touching Windhelm. All other cities and locations are totally safe to save in, and Windhelm loads in just fine, it's just saving inside or near the city is the issue.

Before I post my mod order, I want to stress I am using SKSE and engine fixes, which would be the most obvious solutions to this problem, but clearly, they aren't enough.

Le mod order:

0 0 Skyrim.esm

1 1 Update.esm

2 2 Dawnguard.esm

3 3 HearthFires.esm

4 4 Dragonborn.esm

5 5 Skyrim Project Optimization - Full Version.esm

6 6 Lanterns Of Skyrim - All In One - Main.esm

7 7 Unofficial Skyrim Special Edition Patch.esp

8 8 OSA.esm

9 9 ApachiiHair.esm

10 a ApachiiHairFemales.esm

11 b ApachiiHairMales.esm

12 c FISS.esp

13 d Schlongs of Skyrim - Core.esm

14 e Campfire.esm

15 f EnhancedAIFramework.esm

16 10 OrganicFactions.esm

17 11 FlowerGirls SE.esm

18 12 SkyUI_SE.esp

19 13 SMIM-SE-Merged-All.esp

20 14 EnhancedLightsandFX.esp

21 15 Audio Overhaul Skyrim.esp

22 16 ELFX - Exteriors.esp

23 17 3DNPC.esp

24 18 Cutting Room Floor.esp

25 19 CinematicFireFX.esp

26 1a Undeath.esp

27 1b Hothtrooper44_ArmorCompilation.esp

254 FE 0 AnimatedEatingReduxTableBenchPatch.esp

28 1c VanillaOptimized.esp

29 1d iHUD.esp

30 1e FNIS.esp

31 1f Dark Face Bug Fix.esp

32 20 HumanEnemyDrops.esp

33 21 Diversity - An NPC Overhaul.esp

34 22 LeatherBackpackStraps-None.esp

35 23 Skysan_Stalhrim.esp

36 24 MannequinStayPut.esp

37 25 Footprints.esp

38 26 loadscreensarcasmDLC.esp

39 27 loadscreentextsextrasass.esp

40 28 Improved Eyes Skyrim.esp

41 29 Improved Eyes Skyrim - Vamp.esp

42 2a Improved Eyes Skyrim - Serana.esp

43 2b Vampire Royal Armor v3.esp

44 2c Better Miraak's Sword.esp

45 2d ApocryphaSpellTomes.esp

46 2e Audio Overhaul Skyrim - Reduced Reverb.esp

47 2f hmkLockOn.esp

48 30 iNeed.esp

49 31 iNeed - Extended.esp

50 32 Obsidian Mountain Fogs.esp

51 33 OrganicFactionsExtension.esp

52 34 skyBirds_SSE.esp

53 35 OMEGA Populated.esp

54 36 EMCompViljaSkyrim.esp

55 37 Potion of Ultimate Leveling.esp

56 38 Insignificant Object Remover.esp

57 39 Spells Emit Light - Dim.esp

58 3a TKDodge.esp

59 3b 20 More Perk Points.esp

60 3c AMatterOfTime.esp

61 3d SkyHUD.esp

62 3e Point The Way.esp

63 3f Aurlyn.esp

64 40 TheScarlett.esp

65 41 Inigo.esp

66 42 konahrik_accoutrements.esp

254 FE 1 Qw_3DNPC_USSEP Patch.esp

67 43 JaxonzBlinkTeleport2.esp

68 44 AurlynSerenityOverhaul.esp

69 45 NoMoreBloom.esp

70 46 NoMoreHDR.esp

71 47 CBBE.esp

72 48 RaceMenuMorphsCBBE.esp

73 49 AIMFIX.esp

74 4a Aequinoctium.esp

75 4b TrueStormsSE.esp

Aequinoctium - BSBruma PATCH.esp

Aequinoctium - Falskaar PATCH.esp

Aequinoctium - SOSComplete PATCH.esp

Aequinoctium - SOSWilds PATCH.esp

76 4c Aequinoctium - TrueStorms PATCH.esp

77 4d RaceMenu.esp

78 4e RaceMenuPlugin.esp

79 4f SOS - VectorPlexus Muscular Addon.esp

80 50 Volkihar Knight.esp

81 51 UndeadFX.esp

82 52 SpellChargingFramework.esp

83 53 Immersive Weapons.esp

84 54 Skyrim Revamped - Complete Enemy Overhaul.esp

85 55 Schlongs of Skyrim.esp

86 56 Hothtrooper44_Armor_Ecksstra.esp

87 57 ScopedBows.esp

88 58 ScopedBows_EagleEyeTweak.esp

89 59 ScopedBows_ArrowTweaks.esp

90 5a XPMSE.esp

91 5b SOSRaceMenu.esp

92 5c UIExtensions.esp

93 5d Grimy Utilities Interface.esp

94 5e Hunterborn.esp

95 5f Frostfall.esp

96 60 SofiaFollower.esp

97 61 notice board.esp

254 FE 2 Qw_SofiaFollower_USSEP Patch.esp

98 62 Mysticism.esp

99 63 The Paarthurnax Dilemma.esp

100 64 Yashira.esp

101 65 shadowscaleset.esp

102 66 WetandCold.esp

103 67 Hunterborn - iNeed Patch.esp

104 68 Hunterborn - Campfire Patch.esp

105 69 AnimatedEatingRedux.esp

254 FE 3 AnimatedEating_Coffee Patch.esp

106 6a TakeNotes.esp

107 6b Undeath Ascension.esp

Undeath Immersive Lichdom.esp

108 6c Dr_Bandolier.esp

109 6d NetherMage.esp

110 6e Walklikeanormalperson.esp

111 6f Armour_of_Yngol.esp

112 70 MLU.esp

113 71 Rebalanced Encounter Zones.esp

114 72 ScopedBows_MLU Patch.esp

115 73 Ordinator - Perks of Skyrim.esp

254 FE 4 Qw_Ordinator_AOS Patch.esp

116 74 Apocalypse - Magic of Skyrim.esp

117 75 Apocalypse - Cheat Chests.esp

118 76 Apocalypse - Ordinator Compatibility Patch.esp

119 77 Sacrosanct - Vampires of Skyrim.esp

120 78 Wildcat - Combat of Skyrim.esp

121 79 Wildcat - Realistic Damage Plugin.esp

122 7a UltimateCombat.esp

123 7b ELFXEnhancer.esp

124 7c elfx enhancer tweaks brighter.esp

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So yeah, I'm at a loss. Knowing that I can just simply not save in Windhelm is a decent fix, for now, but I may need to save at some point in the area, and I'd rather not risk getting stuck inside an area that crashes. Any advice would be most appreciated. Thank you very much.