9. Obtain and add the major landscape textures packs (and install in this order):-
Morrowind Visual Pack v.3.0 (info, but Filefront link to mvp30rc1.rar is dead — get it here or direct download here). Massive hi-res texture pack that incorporates/combines the old Khalazza MW Visual Pack 2.11, Khalazza MW Visual Pack 2.2 (Nature), and Quarl’s Visual Pack XT.
Texture Fix (Texture_Fix_18.7z and Texture_Fix__Bloodmoon_11.7z — but don’t bother with Texture_Fix__TR…_v12.7z as it’s for Tamriel Rebuilt and seems to cause conflicts with your more up-to-date version of TR). Fixes thousands of seams that become more visible when using better textures. You really want this.
Now test that your outdoors frame rate is still acceptable at your chosen resolution. I run fine at 1920 x 1200px widescreen.