I've no idea what causes this and can't isolate the problem (to any particular mod/ combination of mods or anything like that.) I have noticed that using Morrowind Patch 1.6.3 helps a bit (though it doesn't get rid of the problem entirely) and 1.6.4/5beta seems to make it worse again, but that could be co-incidental & nothing to do with what's actually causing it.
Anyone else experienced this or have any idea what causes it please?
(Currently installed mods.........)
Spoiler
001_ Morrowind.esm
_002_ Tribunal.esm
_003_ Bloodmoon.esm
_004_ Morrowind Patch v1.6.3.esm
_005_ Morrowind Patch v1.6.3.8a add-on.esm
_006_ Texture Fix - Bloodmoon 1.1.esm
_007_ Texture Fix 1.8.esm
_008_ Book Rotate.esm
_009_ Beryl's_Head_Replacer_v1.0.esm
_010_ MCA.esm
_011_ Weapon Rotate.esm
_012_ Seamless MW.esp
_013_ TownSounds.esp
_014_ Better Bodies.esp
_015_ Clean Fief's Guide To Saltrice.esp
_016_ Clean Holamayan Shack.esp
_017_ VOORHEES_AldIndoril2.esp
_018_ PeasantGownsReplacer.esp
_019_ PeasantGownsReplacerTRIB.esp
_020_ Solstien_undialog.esp
_021_ BM-Armor-FIX.esp
_022_ MoragTongWritFix.esp
_023_ HasphatsBooks.esp
_024_ Of Human Bondage.esp
_025_ Mournhold Clockmaker 1.0.esp
_026_ Vivec_Voice_addon TRIBUNAL.esp
_027_ The Shrine of Mephala by Westly.esp
_028_ PropylonRedux_v1.1.esp
_029_ TC_SadrithMoraClosed.esp
_030_ Barabus Orcs.esp
_031_ ExpandedMoA.esp
_032_ ExpandedMoA-HR.esp
_033_ Almalexia_Voicev1.esp
_034_ barilzar_voice.esp
_035_ SilverisDraconis.esp
_036_ Book Rotate - Tribunal v5.3.esp
_037_ Book Rotate - Bloodmoon v5.3.esp
_038_ Dremora Archer.esp
_039_ SirLuthor-Tools.esp
_040_ Dagoth Gares_Voice_addon v1.1.esp
_041_ Ald Redaynia Extended.esp
_042_ chapelsv2.esp
_043_ IceNioLivRobeReplacerALL.esp
_044_ Sn_FastTravelbySea v1.0.esp
_045_ Authentic Signs IT 1.1.esp
_046_ BEER!.esp
_047_ Fortified_Thirsk_1.1.esp
_048_ Key Replacer Trib & BM.esp
_049_ Pelagiad Fix.esp
_050_ BetterBooks_AlchFormfix.esp
_051_ Barabus' fireplaces 2.esp
_052_ Lantern replacer By Leeloo.esp
_053_ Meteor.esp
_054_ SlaveEscort.esp
_055_ SpzInteriorDaylight.esp
_056_ Creatures.esp
_057_ syc_herbalismforpurists.esp
_058_ sg1_alchemy_book.esp
_059_ Syc_HerbalismforPurists_BM.esp
_060_ Syc_HerbalismforPurists_TB.esp
_061_ Clean moons_soulgems.esp
_062_ night gallery.esp
_063_ Twilight_Flight_1.0.esp
_064_ Companion RPP.esp
_065_ P.R.E. v4.0.esp
_066_ Unboarable Rieklings.esp
_067_ Thirsk Expanded.esp
_068_ EcoAdj Ingredients.esp
_069_ EcoAdjCrime.esp
_070_ EcoAdjMisc.esp
_071_ EcoAdjDaedricDrops.esp
_072_ Theft.esp
_073_ Service_Requirements_V1.4.3.esp
_074_ Nymeria's Mages'guild fix.esp
_075_ BAR_MournholdTeleportationFix.esp
_076_ Pieces of the Blade Fix.esp
_077_ shvBugFix01.esp
_078_ Tribunal Crimson Plague Tweaker.esp
_079_ St Llothis Fix.esp
_080_ Crusader Class Fix.esp
_081_ MW_Public_Library.esp
_082_ VGreetings.esp
_083_ VGreetings-Idle.esp
_084_ VGreetings-Attack.esp
_085_ VGreetings-Thief.esp
_086_ VGreetings-Hit.esp
_087_ VGreetings-Flee.esp
_088_ Minions of House Dagoth - No Undead.esp
_089_ Alchemist's Services.esp
_090_ Apothecary' s Services.esp
_091_ Daedric Forge.esp
_092_ Smith's Services.esp
_093_ Gameplay - Dialogue.esp
_094_ Great House Dagoth.esp
_095_ Creatures Great House Dagoth Patch.esp
_096_ Real_wildlife_2b Complete.esp
_097_ BM-Fixes.esp
_098_ Syc_AtHomeAlchemy.esp
_099_ Healers.esp
_100_ DN_Adamantium.esp
_101_ EcoAdjMerchantSkills.esp
_102_ Improved Gold Weight.esp
_103_ LCV Schedule Markers.esp
_104_ NPC LCV Schedules 03.esp
_105_ LCV Wolverine Hall 01.esp
_106_ frostmoth_repaired_v0_31.esp
_107_ More trees and foliage autumn v1-1.esp
_108_ Forests of Vvardenfell.esp
_109_ Vality's Ascadian Isles Addon.esp
_110_ Vality's Bitter Coast Addon.esp
_111_ Clean Histaang Forest V3.esp
_112_ Vurt's Grazelands Trees.esp
_113_ Vurt's BC Tree Replacer II.esp
_114_ Enmesharra's Tapastry Shop.esp
_115_ Enmesharra's Tapastry Shop Addon.esp
_116_ Daggerfall Collection Ver 1.1 (BTB Edit).esp
_117_ Clean The Mortal Life of Vivec.esp
_118_ unskillbook.esp
_119_ CalSurGuardMod.esp
_120_ Caldera Mining Company Gets Reinforcements.esp
_121_ Bones11-tb-bm.esp
_122_ ImprovedTeleportation2.0.esp
_123_ Universal Companion Share.esp
_124_ Suran Slave Mkt addons.esp
_125_ Bloated Caves.esp
_126_ UUMP Bloated Morrowind Patch v1.6.3.8a.esp
_127_ Grass_AC&S.esp
_128_ Hold it ressource.esp
_129_ Gladiator.esp
_130_ Weapon Rotate - Tribunal.esp
_131_ Weapon Rotate - Bloodmoon.esp
_132_ Illuminated Order v1.0.esp
_133_ Illuminated Order v1.0 - Bloodmoon Compatibility Extras.esp
_134_ Living Statues of Malacath.esp
_135_ Atmospheric Balmora for VBA.esp
_136_ Vality's Balmora Addon.esp
_137_ FoV Valitys Addon.esp
_138_ Nasty Cammona Tong.esp
_139_ Camonna Tong's violence 1.2.esp
_140_ wl_dockclutter.esp
_141_ Vivec Expansion 2.0.esp
_142_ VivecExp + DockClutter Add Ons.esp
_143_ NX9_Guards_Complete.esp
_144_ Juniper's Twin Lamps (1.1 Tribunal).esp
_145_ Twin Lamps Lscape Fix.esp
_146_ FreeMoreSlaves.esp
_147_ Clean Normal Regen.esp
_148_ Balance - NPC Spellcasting.esp
_149_ Kn-PowerToThePeople.esp
_150_ MCA - Guards Patch.esp
_151_ New Gnaar Mok.esp
_152_ Undeads Skeletons Arise from Death.esp
_153_ Undeads - Skeletons Arise from Death II.esp
_154_ Starfires NPC Additions ver-1.11.esp
_155_ Siege at Firemoth.esp
_156_ Hold it - SF npc addon.esp
_157_ ProperLadies Alchemists-n-Tailors.esp
_158_ ProperLadies Nobles.esp
_159_ DB_Attack_Mod.esp
_160_ Better Skulls.esp
_161_ ExpansionIntegration_NoStalhrim.esp
_162_ Less_Generic_Bloodmoon.esp
_163_ TheForgottenShields - Artifacts_NG.esp
_164_ MDP - Sadrith Mora.esp
_165_ Madd Leveler - Base.esp
_166_ Madd Leveler - Cap Remover.esp
_167_ Madd Leveler - Vampire Cap Remover.esp
_168_ Misc vanilla tweaks.esp
_169_ MCA AddedSpawnPoints.esp
*171* Reduced Spawns Vanilla.esp
*172* Reduced Spawns RW.esp
*173* Reduced Spawns Plx.esp
*174* MCA 5.1 - Lighter.esp
*175* MCA Lore Correct 5.1.esp
*176* Reduced Spawns MCA.esp
*177* MCA Events & Enc.esp
*178* MCA - No Crusaders.esp
*179* MCA Arkay Knights.esp
*180* BalancedWeaponsArmour1.3.esp
*181* BalancedWA MCA.esp
*182* BalancedWA Misc.esp
*183* Madd Leveler - Illuminated Order Fix.esp
*184* Ald-Vendras_V31.esp
*185* VAI FoV lscape fix.esp
*186* NPC Functionality.esp
*187* horationpcenhanced12-bm.esp
*188* npce_mwse_patch.esp
*189* Realistic Weather v2.0.esp
*190* TF1.8 Valitys Seam fix.esp
*191* PassingComments.esp
*192* FoV WG trees.esp
_170_ Mashed Lists.esp
_193_ Minions of House Dagoth - MCA 5.x Patch.esp
_002_ Tribunal.esm
_003_ Bloodmoon.esm
_004_ Morrowind Patch v1.6.3.esm
_005_ Morrowind Patch v1.6.3.8a add-on.esm
_006_ Texture Fix - Bloodmoon 1.1.esm
_007_ Texture Fix 1.8.esm
_008_ Book Rotate.esm
_009_ Beryl's_Head_Replacer_v1.0.esm
_010_ MCA.esm
_011_ Weapon Rotate.esm
_012_ Seamless MW.esp
_013_ TownSounds.esp
_014_ Better Bodies.esp
_015_ Clean Fief's Guide To Saltrice.esp
_016_ Clean Holamayan Shack.esp
_017_ VOORHEES_AldIndoril2.esp
_018_ PeasantGownsReplacer.esp
_019_ PeasantGownsReplacerTRIB.esp
_020_ Solstien_undialog.esp
_021_ BM-Armor-FIX.esp
_022_ MoragTongWritFix.esp
_023_ HasphatsBooks.esp
_024_ Of Human Bondage.esp
_025_ Mournhold Clockmaker 1.0.esp
_026_ Vivec_Voice_addon TRIBUNAL.esp
_027_ The Shrine of Mephala by Westly.esp
_028_ PropylonRedux_v1.1.esp
_029_ TC_SadrithMoraClosed.esp
_030_ Barabus Orcs.esp
_031_ ExpandedMoA.esp
_032_ ExpandedMoA-HR.esp
_033_ Almalexia_Voicev1.esp
_034_ barilzar_voice.esp
_035_ SilverisDraconis.esp
_036_ Book Rotate - Tribunal v5.3.esp
_037_ Book Rotate - Bloodmoon v5.3.esp
_038_ Dremora Archer.esp
_039_ SirLuthor-Tools.esp
_040_ Dagoth Gares_Voice_addon v1.1.esp
_041_ Ald Redaynia Extended.esp
_042_ chapelsv2.esp
_043_ IceNioLivRobeReplacerALL.esp
_044_ Sn_FastTravelbySea v1.0.esp
_045_ Authentic Signs IT 1.1.esp
_046_ BEER!.esp
_047_ Fortified_Thirsk_1.1.esp
_048_ Key Replacer Trib & BM.esp
_049_ Pelagiad Fix.esp
_050_ BetterBooks_AlchFormfix.esp
_051_ Barabus' fireplaces 2.esp
_052_ Lantern replacer By Leeloo.esp
_053_ Meteor.esp
_054_ SlaveEscort.esp
_055_ SpzInteriorDaylight.esp
_056_ Creatures.esp
_057_ syc_herbalismforpurists.esp
_058_ sg1_alchemy_book.esp
_059_ Syc_HerbalismforPurists_BM.esp
_060_ Syc_HerbalismforPurists_TB.esp
_061_ Clean moons_soulgems.esp
_062_ night gallery.esp
_063_ Twilight_Flight_1.0.esp
_064_ Companion RPP.esp
_065_ P.R.E. v4.0.esp
_066_ Unboarable Rieklings.esp
_067_ Thirsk Expanded.esp
_068_ EcoAdj Ingredients.esp
_069_ EcoAdjCrime.esp
_070_ EcoAdjMisc.esp
_071_ EcoAdjDaedricDrops.esp
_072_ Theft.esp
_073_ Service_Requirements_V1.4.3.esp
_074_ Nymeria's Mages'guild fix.esp
_075_ BAR_MournholdTeleportationFix.esp
_076_ Pieces of the Blade Fix.esp
_077_ shvBugFix01.esp
_078_ Tribunal Crimson Plague Tweaker.esp
_079_ St Llothis Fix.esp
_080_ Crusader Class Fix.esp
_081_ MW_Public_Library.esp
_082_ VGreetings.esp
_083_ VGreetings-Idle.esp
_084_ VGreetings-Attack.esp
_085_ VGreetings-Thief.esp
_086_ VGreetings-Hit.esp
_087_ VGreetings-Flee.esp
_088_ Minions of House Dagoth - No Undead.esp
_089_ Alchemist's Services.esp
_090_ Apothecary' s Services.esp
_091_ Daedric Forge.esp
_092_ Smith's Services.esp
_093_ Gameplay - Dialogue.esp
_094_ Great House Dagoth.esp
_095_ Creatures Great House Dagoth Patch.esp
_096_ Real_wildlife_2b Complete.esp
_097_ BM-Fixes.esp
_098_ Syc_AtHomeAlchemy.esp
_099_ Healers.esp
_100_ DN_Adamantium.esp
_101_ EcoAdjMerchantSkills.esp
_102_ Improved Gold Weight.esp
_103_ LCV Schedule Markers.esp
_104_ NPC LCV Schedules 03.esp
_105_ LCV Wolverine Hall 01.esp
_106_ frostmoth_repaired_v0_31.esp
_107_ More trees and foliage autumn v1-1.esp
_108_ Forests of Vvardenfell.esp
_109_ Vality's Ascadian Isles Addon.esp
_110_ Vality's Bitter Coast Addon.esp
_111_ Clean Histaang Forest V3.esp
_112_ Vurt's Grazelands Trees.esp
_113_ Vurt's BC Tree Replacer II.esp
_114_ Enmesharra's Tapastry Shop.esp
_115_ Enmesharra's Tapastry Shop Addon.esp
_116_ Daggerfall Collection Ver 1.1 (BTB Edit).esp
_117_ Clean The Mortal Life of Vivec.esp
_118_ unskillbook.esp
_119_ CalSurGuardMod.esp
_120_ Caldera Mining Company Gets Reinforcements.esp
_121_ Bones11-tb-bm.esp
_122_ ImprovedTeleportation2.0.esp
_123_ Universal Companion Share.esp
_124_ Suran Slave Mkt addons.esp
_125_ Bloated Caves.esp
_126_ UUMP Bloated Morrowind Patch v1.6.3.8a.esp
_127_ Grass_AC&S.esp
_128_ Hold it ressource.esp
_129_ Gladiator.esp
_130_ Weapon Rotate - Tribunal.esp
_131_ Weapon Rotate - Bloodmoon.esp
_132_ Illuminated Order v1.0.esp
_133_ Illuminated Order v1.0 - Bloodmoon Compatibility Extras.esp
_134_ Living Statues of Malacath.esp
_135_ Atmospheric Balmora for VBA.esp
_136_ Vality's Balmora Addon.esp
_137_ FoV Valitys Addon.esp
_138_ Nasty Cammona Tong.esp
_139_ Camonna Tong's violence 1.2.esp
_140_ wl_dockclutter.esp
_141_ Vivec Expansion 2.0.esp
_142_ VivecExp + DockClutter Add Ons.esp
_143_ NX9_Guards_Complete.esp
_144_ Juniper's Twin Lamps (1.1 Tribunal).esp
_145_ Twin Lamps Lscape Fix.esp
_146_ FreeMoreSlaves.esp
_147_ Clean Normal Regen.esp
_148_ Balance - NPC Spellcasting.esp
_149_ Kn-PowerToThePeople.esp
_150_ MCA - Guards Patch.esp
_151_ New Gnaar Mok.esp
_152_ Undeads Skeletons Arise from Death.esp
_153_ Undeads - Skeletons Arise from Death II.esp
_154_ Starfires NPC Additions ver-1.11.esp
_155_ Siege at Firemoth.esp
_156_ Hold it - SF npc addon.esp
_157_ ProperLadies Alchemists-n-Tailors.esp
_158_ ProperLadies Nobles.esp
_159_ DB_Attack_Mod.esp
_160_ Better Skulls.esp
_161_ ExpansionIntegration_NoStalhrim.esp
_162_ Less_Generic_Bloodmoon.esp
_163_ TheForgottenShields - Artifacts_NG.esp
_164_ MDP - Sadrith Mora.esp
_165_ Madd Leveler - Base.esp
_166_ Madd Leveler - Cap Remover.esp
_167_ Madd Leveler - Vampire Cap Remover.esp
_168_ Misc vanilla tweaks.esp
_169_ MCA AddedSpawnPoints.esp
*171* Reduced Spawns Vanilla.esp
*172* Reduced Spawns RW.esp
*173* Reduced Spawns Plx.esp
*174* MCA 5.1 - Lighter.esp
*175* MCA Lore Correct 5.1.esp
*176* Reduced Spawns MCA.esp
*177* MCA Events & Enc.esp
*178* MCA - No Crusaders.esp
*179* MCA Arkay Knights.esp
*180* BalancedWeaponsArmour1.3.esp
*181* BalancedWA MCA.esp
*182* BalancedWA Misc.esp
*183* Madd Leveler - Illuminated Order Fix.esp
*184* Ald-Vendras_V31.esp
*185* VAI FoV lscape fix.esp
*186* NPC Functionality.esp
*187* horationpcenhanced12-bm.esp
*188* npce_mwse_patch.esp
*189* Realistic Weather v2.0.esp
*190* TF1.8 Valitys Seam fix.esp
*191* PassingComments.esp
*192* FoV WG trees.esp
_170_ Mashed Lists.esp
_193_ Minions of House Dagoth - MCA 5.x Patch.esp