Extreme Lag when placing wallpaper on walls

Issue

When placing wallpaper (and sometimes floor tiles) the game lags extremely and I can hardly place anything

Cause

Patch 1.44.83 only somewhat helped with this issue so it’s still treated as open bug.

According to SimGuruNick on twitter, the lag only occurs on blocks attached to roofs.

Workaround

Delete every roof object first, then place the wallpaper

Be aware that this is only a temporary workaround until Maxis can fix the issue permanently.

AHQ-Bug Thread on the Issue