Ok, it's Consumer Reports, not Chris Harris. But, still CR has its place, and I find their reviews reasonably accurate and objective. They get it right more often than not.
I was somewhat surprised by their observations on ride comfort, as between the 991 and 981, especially given the 981 they tested was on 20" Carrera S wheels.
991
Ride comfort: The 911's ride is quite tolerable as sports cars go, but if you expect something cushy simply because of the high sticker price, you're in the wrong car. There is a layer of isolation that takes the edge off most bumps, but some impacts come through in a pronounced way at lower speeds, often accompanied by short, quick body motions. As speeds rise, the ride becomes very settled and steady, but the underlying taut feel remains.
Later, they rate the ride as "Fair' and noise as 'Fair'
981
Ride comfort and noise: The ride is firm and well controlled, but impacts are nicely muted overall. The Boxster is very civilized around town and on the highway, especially for a car with 20-inch tires. With the engine located right behind the driver's head, engine noise is noticeable, but in a good way. A smooth mechanical hum and mellow exhaust note become louder under full throtttle, but it's not a sound enthusiast drivers will find objectionable. Wind and road noise are noticeable in moderate driving even with the top up, but conversation is possible underway with the top up or down thanks, in part to the screened wind blocker behind the seats.
Later, they rate ride as 'Good' and noise as "Good'
I wonder if, with all that weight aft of the rear axle, Porsche uses stiffer springs on the 991.
That aside, other things being equal, the 981's wheelbase, being one inch longer, may help smooth the ride a bit.