Laggy UI on PC

The UI start to feel laggy, sometimes when I move the mouse fast enough when buying items in the store, the mouse isn't registering where I clicked (press then release).

Click on a item to buy in the store (an item on the side of the store prefered ).
Move the mouse to where the confirmation button should be before the confirmation screen appears.
The items displayed is not the item clicked but the item where the cursor end after moving it.

Since I'm doing this like muscle memory in the "Featured Shipment" with credits, sometimes I'm buy ing fragments I don't need and loosing cristal.