Have eCatcher installed on your PC
How to modify the MTU
On your PC, go to Control Panel > Network and Internet > Network Connections
Right-click on the eCatcher TAP and select Properties.
In the Properties, click on the Configure button.
Go to the Advanced Tab (1), select the MTU (2) and modify its value (3). By default, the MTU value is 1500.
To apply the change, click on OK and restart your PC.