We have two workstations in the office that when using Catia (V5-6R2020) all day the user input slows down during the day. So towards the end of the day and particularly in drafting after selecting an entity to implement a command or to finish a command the windows busy icon pops up and spins for 2 to 5 seconds, this is highly irritating. It happens on a Lenovo S30 certified workstation as well as a generic workstation, have tried various different Quadro drivers to no avail. Have checked Windows Task Manager and under the Status column for Catia it says "Not Responding" and the cpu usage spikes whilst this is happening. What could the cause of this problem be?