Hey there,
When recording with Focusrite units, you’ll need to mute the track in Cubase and raise the input’s fader in MixControl (the appropriate mix’s tab being selected) for zero latency monitoring while you record. Make sure that the correct mix is selected for each active output in the routing section at the bottom left. This setup will fix latency issues while you record, but the delays during playback can’t be helped barring driver enhancements or system optimizations.