After experimenting with grass settings, I am recommending the following grass settings for STEP:
[Grass] bAllowCreateGrass=1 bAllowLoadGrass=0 bDrawShaderGrass=1 fGrassFadeRange=10000 fTexturePctThreshold=0 iGrassCellRadius=2 iMaxGrassTypesPerTexure=7 iMinGrassSize=40
[Grass] fGrassMaxStartFadeDistance=7000 fGrassMinStartFadeDistance=0 fGrassStartFadeDistance=1000
What this does is lowers the grass fade starting distance while expanding the range over which grass fades, which almost if not entirely removes the grass popping in effect that can be experienced if merely increasing the grass fade distance. A video to demonstrate this might be useful. Also, a slight increase to iMinGrassSize (grass density) doesn't have any real visual effect and may increase performance slightly. iMaxGrassTypesPerTexure is set to the Skyrim Flora Overhaul recommended level, and it really doesn't appear to affect vanilla much, although it definitely is a valid setting. Testing of this value needs to be done. The rest are default settings or fixes for the default settings.
Optionally users can disable windy grass:
[Grass] fGrassWindMagnitudeMax=0 fGrassWindMagnitudeMin=0
If users prefer to disable grass altogether, these settings should remove grass several times over:
[Grass] bAllowCreateGrass=0 bAllowLoadGrass=0 bDrawShaderGrass=0 fGrassFadeRange=0 fTexturePctThreshold=0.2 fGrassWindMagnitudeMax=0 fGrassWindMagnitudeMin=0 iGrassCellRadius=-1 iMaxGrassTypesPerTexure=-1 iMinGrassSize=0
[Grass] fGrassMaxStartFadeDistance=7000 fGrassMinStartFadeDistance=0 fGrassStartFadeDistance=0
as well as the TG console command.