Audio delay due Marantz receiver

It’s a much discussed topic here how some audio receivers add a delay to music from a Sonos Port. 
 

I use a Port to send a signal to my Marantz AV7704. The Marantz then sends a signal to my Macintosh Amp which powers the speakers in my living room. Due to the processing done by the Marantz, a slight, but annoying, delay is introduced to the music coming out of the speakers attached to the Marantz when compared to the rest of my Sonos system throughout my house.  The rest of my house is mostly in-ceiling speakers powered by Sonos amps.

A common answer is for me to put the Marantz into “direct” mode.  If the Marantz doesn’t have to process the music, no delay is added. But I think this is a poor answer.  The processing in all the non-direct modes makes the sound of the music so much better  

I guess it’s too hard for Sonos to allow us to add a delay to the rest of our Sonos system so the whole house will be synced up to the delayed room.  Else they would have done this. 

So given that Soson isn’t going to help us here, I’ll attack the issue the other way;
Can I replace my Marantz with a receiver that doesn’t add a delay (or doesn’t add a significant delay) when in modes other than “Direct?”

Does anybody have a good receiver (a separate like the AV7704) they can suggest? One that processes the music nicely but without a delay?

I’m fairly invested in Sonos so switching to the competition is cost prohibitive at this point - and I’m not sure if those systems have overcome this issue anyway.