Upgrading hardware and xruns

I have a Zynthian with a Raspberry Pi 3B and Hifiberry-DAC+. I do experience xruns quite a lot (especially in ZynAddSubFx, and depending on the chosen preset and amount of polyphony). So I am wondering if upgrading to a 3B+, and/or a hifiberry pro (with built in audio clock) would help a bit?