You need to set the dicing rate to a lower number not a higher one, also i dont think your subdivision seems to be working at all in that image, you may have the wrong displacement settings in the object properties.
I say its not working as looking at that image you can see triangles, that seem to get smaller as they get into the background, if dynamic subdiv was working you would not see such a pattern, As the largest triangles you would have would be 8px in size
Search your object properties until you find displacement type and set it to true, not to bump or both. (This setting is not in the shader editor)
