Grimlakin
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This is kind of huge in my mind. Though in day to day probably a non issue.
www.tomshardware.com
Summary is arrow lake z890 motherboards with arrow lake CPUs have latency capping gen 5 sad performance to 12ish gb a second as opposed to 14.
Good news is no need to buy the faster drives!!! Save money.

Intel Arrow Lake processors bottleneck PCIe 5.0 NVMe SSDs by 16%, limiting peak speeds to 12Gb/s instead of 14Gb/s
Thankfully, the issue does not impact PCIe M.2 add-in cards
Summary is arrow lake z890 motherboards with arrow lake CPUs have latency capping gen 5 sad performance to 12ish gb a second as opposed to 14.
Good news is no need to buy the faster drives!!! Save money.