Rock in D (Drop D II) — muted strums
Muting this grid combines the two difficulties already met separately in the catalogue's Drop D family: the fastest change rate (one chord per beat, versus two beats per chord in the 'basic' version) and muting the G5d/E5d barres alternating with the fully open D5d. The palm therefore has no time to settle before the next change.
Tips
If muting on this grid's 'basic' version is already reliable, this is where the speed of change becomes the real difficulty, not the palm technique itself.
Slow the tempo down until the palm has time to stay stable on each chord, then speed up gradually.
Compare with the catalogue's syncopated rhythm version of this same grid: here the difficulty is constant speed, there it's the off-beat.
Chord progression — D
Bar 1
D5d
Bar 2
G5d
Bar 3
D5d
Bar 4
E5d
Bar 5
G5d
Bar 6
D5d
Bar 7
E5d
Bar 8
D5d