There really is only two paths to follow to troubleshoot and resolve:
- Verify current draw at different percentages. This may be the easiest start and most likely to identify the problem. You’ll need an ammeter on your machine or one that is integrated into your laser power supply.
Using vectors (line / cut on the layer NOT engraving) verify that 2% draws less current (mA) than 10% etc. So, 2% < 10% < 20% < 50%.
If you conclude that yes the higher the percent the higher the mA draw, you probably just need to adjust the laser PSU trim pot so that 99% power setting only draws your laser tube’s recommended long life current amount. That may be about 24 - 26 mA for a 60W tube.
If the current (mA) stays the same no matter what you set the power to, then see option #2.
- Verify the voltage output from the Ruida DSP to the laser PSU (this is a PWM electrical signal) changes as the power setting of the layer changes.
It very well should, but if it doesn’t well… measure again 
Then verify you have the wiring correct from the controller to the laser PSU. See this post: