Upgraded” from the Broadcom XB6 to the XB7 w/Puma 7 chip and it's slower than the old XB6 even w/WiFi 6. The wall penetration is horrible w/XB7. Curious of other peoples' experiences :
ARRIS Technical Bulletin
Intel Chipset Causing Gigabit Broadband Lag | eTeknix
List of Bad Modems with Intel Puma 6 & Puma 7 Chipsets