We can help you, if you can have Patience. This could be short or a long process.

Lets start with more information than you have given us.
Post a picture of your 3D Printer, post your Marlin 1.1.x configuration files.
Measure your Stepper motor Vref current and post.
You can measure the power supply voltage at the supply and at the controller, we may need to make further supply measurements after we proceed to ensure proper voltage while in operation.

With this information we can get a basic ideal where we need to proceed to start helping you.
While we look at this information you can help by making sure that all stepper motor Axis have a smooth and free travel without any binding.
Make sure that the belts if any are snug with causing any binding and center any bearing without the belt rubbing on holders...