You can read my thread with similar experiences here:
http://theartofsound.net/forum/showt...-vs-Decoupling
My solution was to use Bright Star IsoNodes in place of my speaker floor spikes. Using granite platforms isn't enough & real squishy / bouncy (but damped) decoupling is the best way to go.
After I'd decoupled my speakers I moved onto my rack & decoupled all the components. This gave me a welcome improvement too. As I have a speaker close to the rack I think this helped proportionally more than may happen in other rooms.
Mana Acoustics Racks / Bright Star IsoNodes Decoupling >> Allo DigiOne Player >> Pedja Rogic's Audial Model S DAC + Pioneer PL-71 turntable / Vista Audio phono-1 mk II / Denon PCL-5 headshell / Reson Reca >> LFD DLS >> LFD PA2M (SE) >> Royd RR3s.