It is definitely not uncommon to have the motors wear and get slow with time. Switches only switch in the 12V to the motors/regulators. Unfortunately the best solution is to replace the motors.any of you with older vehicles have an issue with the electronic windows taking forever to roll up or down? It seems all the switches work but you almost need to plan ahead if you want to roll a window down? I replaced the main drivers switches out a few years ago when it broke, but all of them, even the sunroof just seem like they are in low gear?