I am playing my modpack in 1.7.10 and I recently crafted a power fist. I installed the pickaxe, axe and shovel modules as well as a battery that is completely charged. I overclocked the modules to harvest speed x30, but there wasn't any effect. It was as fast as a normal stone tool. All the other modules seemed to work fine.
I didn't set any keybinds, so that can't be the problem and I am in gamemode 0.
I play on a server, but I also tested it in singleplayer and it didn't work.
I installed the newest version.
I would very appreciate it if somebody could help me.
PS: I tried out different kinds of stone and wood, like cobblestone, clean stone and oak wood, but there was no difference.