Thank you for contacting Syncfusion Support.
Can you please confirm if you have installed Syncfusion Essential Studio setup in your machine? If so, then all the required Syncfusion assemblies will be installed in GAC and you will not need to maintain assemblies locally in your end.
We hope currently Syncfusion assemblies are referred from GAC in your machine, so it is working and it can be confirmed by checking Path from the property window. Please refer to below screenshot.