Is terminal activity support for informix 4GL system?

We are using putty to login into the informix 4GL system and while using putty we can’t get the selector inside the putty window. The whole window itself get it as one object. If the window take sometime to load the screen because of network slowness the Robot will skip the some send keys activity and continue on other activities which will lead to wrong data entered into the wrong column.

Is any other solution for this?