You didn't mention that part. The write penalty on a QLC NAND drive is very high.
https://www.firstpost.com/tech/news-analysis/samsung-870-qvo-sata-ssd-review-possibly-the-best-qlc-drive-you-can-get-but-it-isnt-for-everyone-9145371.html#:~:text=The Samsung 870 QVO is a QLC NAND SSD with,within that 42 GB cache.
"The Samsung 870 QVO is a QLC NAND SSD with a SATA interface. The unit I received is the 1 TB variant. It has a 1 GB of DRAM cache and about 42 GB of SLC cache. Samsung rates the read/write speeds of the drive at around 550 MB/s, but neglects to mention that you’ll only get these speeds within that 42 GB cache. Once the cache is saturated, speeds drop to about 50 MBps for mixed data, and 110 MB/s for large files"