It's so much faster when you're not using the mouse. Move up to 'Transactions', then 'Customers', then 'Payments', then scroll down to which one you want to see.

Or you can do '5, 3, 12, <customer number>'

Try changing the work flow of the 60 year old lady in accounts payable who's been using that for the last 25 years, she will never bring you in brownies again.

Not to mention no fat web client interacting with a server in the cloud is as fast as interacting with the server in the basement of your own building.