Thank you for responding. You may refer to the troubleshooting suggestions below in order to resolve the slow switching of apps issue.
First, you may perform a clean boot. This is to begin Windows using limited set of drivers and startup programs which would help in eliminating software conflicts. Please refer to this support link in order to do this correctly.
After doing a clean boot, perform a Disk cleanup. This is to delete temporary files which may be causing the slow switching behavior of your applications. Click this link to be guided in doing this method.
Update us of the result for us to be able to assist you further.
Regards.