Sims will not yawn or do the inspired idle when reacting to decorated environment.
There will also be no more moodlets from badly/nicely decorated environment.
If you just want to get rid of the idles, choose this version of the mod instead:
Environment Tweak - No Idles
If you don't want the environmental moodlets completely gone but just reduced, go for this version (which you can totally use in combination with the no idles verion):
Environment Tweak - Reduced Buffs
Required Packs: -
Compatiblity: Will conflict with any mod that alters these tuning files:
idle_Buff_EnvironmentScore_Negative, 240239
idle_Buff_EnvironmentScore_Positive, 240238
all buff_Environment_BBGameplayEffects tuning files
Creator website: https://www.seebee.de/sims4me/