MagicalMaster: Does this help at all?
"You may find increased performance by disabling/turning down the Catalyst AI in your Catalyst Control Panel's 3D settings. In the newer VISION Engine Control Center, this can be accomplished in the advanced view by creating a new profile for nwmain.exe under Gaming - 3D Application Settings, then, under Texture Filtering, setting "Texture Filtering Quality" to "Performance" and "Surface Format Optimization" to "Off." For some reason this may make your character disappear. To make your character reappear, go into the ingame video options and disable Environment Mapping on Creatures."
Also...
Are you running in admin mode?
Are you running it in compatibility mode windows XP service pack 3?
Did you install it to the C drive directly rather than Program Files?
Have you run the 1.69 critical rebuild?
Didn't know that was a thing. Looking into that right now.
also in my... uhh... hysteria... I think I should've made it clearer that I wanted the shiny textures back.