g Extra Speed Inserter
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:
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