I mean...it doesn't look like that much work to just take pedals out of the chain. Does the Sansamp factor into the bypassed signal you speak of? If not, what does that blend knob on the Sansamp do? I have never owned one of those, so I am pretty unfamiliar with them.
Maybe you are taxing that Donner power supply which is causing a digital pedal to lag.
Maybe you are taxing that Donner power supply which is causing a digital pedal to lag.