Hqplayer and RoPieeeXL

I recently decided to give Hqplayer a go with Ropieee. I noticed the volume is much lower which I feel like needs sorting, but the main issue is switching between sources seems to require a reboot of the Raspberry Pi - is that normal or is there a fix for that?

I have a Holo Spring 3 DAC. Does anyone have any suggestions for good initial settings? I’ve stuck with default for now and it’s sounds ever so slightly sharper but not better so I’m interested to hear if there is something obvious I’m missing or that I should try out.