Slow, sluggish windows that seem like they might not make it when they're being rolled down may just need new window motors.  Unlike the old time vehicle windows that were operated manually with handles, newer model windows use switches that power window motors to roll up and down.  Once you notice your windows are not performing like they used to, it's a good idea to have those window motors replaced.  Without prompt attention to the problem, you could get stuck without window power.  Rolling your windows down could get you in quite a jam if a Dodge window motor is losing power.  A window that cannot be closed invites all sorts of problems.  An open window is an open invitation for a burglar.  Saturated interior from rain or snow can also be in your future once the window motor gives out.  Most people can replace their window motors without the help of a professional.
.