Create a custom macro in game and place these lines of text inside.

High Quality

/console farclip 777
/console horizonfarclip 6226
/console groundeffectdensity 256
/console groundeffectdist 140
/console smallcull 0
/console skycloudlod 3
/console characterambient 0

Low Quality

/console groundEffectDensity 16
/console groundEffectDist 1
/console horizonfarclip 1305
/console farclip 177
/console characterAmbient 1
/console smallcull 1
/console skycloudlod 1
/console detailDoodadAlpha 1

The High quality macro shows everything, and the grass seems annoying (stuff you wouldn't want to see in a raid).



Low Quality cuts everything down to barebones.



These seemed easier to me than just screwing around with the video options.