An interesting quirk that I've noticed - and that I think I've seen written elsewhere - is that even after pressing 'store settings' and power-cycling the 271 with the front button, the settings don't seem to be communicated onwards to SpeakerLink attached devices (i.e. DSP speakers).
The 271 seems to need a complete power-off cycle (rear power button or disconnect power plug) for any changes to have an actual effect.

The other thing I noticed / learned is not to forget the channel numbering - I don't have a sub (currently) as I've always let my front 3 speakers take care of Bass duties - so channel 4 is 'missing' in any config (the Centre is #3) and the SL / SR are #5/6...


Trinnov Altitude CI-12; Meridian 861v8 + ID41 + UHD722v2 + 271, 2*SE-update DSP8.2Ks, SE-update DSP7200HC, 4*DSP3200, 4*DSP33, 218, 251
JVC DLA-NZ8; Panasonic TX-P60ZT60E; Lumagen Radiance Pro 5348
Roon [13i7 Win.11 NUC]; SKY Q; Oppo UDP-203EU; AppleTV / Fire Cube / Roku / NVidia