Ah ha! I also have the Yamaha RX-V2700 and am noticing the same problem with the delayed response. Sometimes I have to jack the volume up to activate it.....I will look into adjusting the speaker size in the setup.
Jato - look into obtaining the RX-V2700 receiver manager software - it allows you to control EVERY thing on the receiver from your computer via the RS-232C interface on the back of the unit.... I'll attempt to post a link - if it doesn't work I'll get it to you somehow.
Any cable with "arrows" pointing in one direction or another is just useless...the electrons don't care which way they go! I avoid anything with "Monster Cable" as it is always sold for 3,000% over cost - seriously...it really is 3,000%.
Software - direct download
http://www.yamahapab.com/assets/downloads/exefiles/RcvMgr2700.v1.0.zip
Manual - direct download
http://www.yamahapab.com/assets/downloads/ReceiverManager_Manual_RX-V2700.pdf
The software and manual are free - you will need a free 9-pin serial port and a null modem cable with female ends on both sides. If you build one yourself:
(pin 2 - wires to - pin 3) / (pin 3 - wires to - pin 2) / (pin 5 - wires to - pin 5) / (pin 7 - wires to - pin 8) / (pin 8 - wires to - pin 7)
Some have used a serial to ethernet ($100.00) to manage the receiver via their network vs. having a serial cable tied to their computer. You can not manage it using the existing network connection.
Phil