Hello,
The parameter changes described in the release notes are what will make presets sound different. In particular the Feedback knobs used to go to 100 but now they go to 110 because users asked for self-oscillation at high feedback. Chances are you can turn the feedback knobs up a little and your presets will sustain like they used to in V1.
You may also want to tweak the Filter knob, especially in Tape Echo.
