Looks like V0.17 broke these as they now run slower then normal inserters.

Can be fixed yourself if you're comfortable unzipping and editing the files:
mods\5dim_automatization_0.17.1\prototypes\inserter-extreme-left.lua
mods\5dim_automatization_0.17.1\prototypes\inserter-extreme-left-close.lua
mods\5dim_automatization_0.17.1\prototypes\inserter-extreme-right.lua
mods\5dim_automatization_0.17.1\prototypes\inserter-extreme-right-close.lua

In all three files search for:
rotation_speed = 0.01,
and comment it out or delete it:
--rotation_speed = 0.01,
(the -- comments it out)

So did as above, no change. The rotation_speeds where also set to 0.07 in the files too.

@grazzman look on line 203 near the bottom of the files