If you think of differential in terms of a ratio, yours is a bit less than 2:1, my DG202 is 2:1.
In my days of F3B model flying, I used up to 4:1 for thermalling, and still got adverse yaw, reqiring rudder mixed in.
For the speed task, flown at a very low angle of attack, no differential. With electronic control mixing, a lot of options open
such as flap to elevator (cruising) and elevator to flap (Thermaling) mixing.