Why is my Samsung 9100 PRO lagging in Witcher 3 Next-Gen?
Galloping through the streets of Novigrad in the Next-Gen update was a nightmare; I kept hitting these millisecond-level screen tears that felt totally wrong for a PCIe 5.0 drive. Even though the Samsung 9100 PRO hits 12000MB/s sequential reads, the random 4K performance was a mess, with latency jumping wildly between 45-62ms when loading small texture files. I tried disabling the write cache thinking it would stabilize things, but that was a huge mistake—load times shot up from 4 seconds to 11 seconds. I eventually dove into the Samsung Magician software and bumped the drive queue depth from 32 to 64 and killed the power-saving mode. Checking Resource Monitor, the disk response time finally settled into a tight 2.1-4.8ms range. It wasn't a smooth ride though; the system actually deadlocked for a second at the main menu until I manually forced the motherboard PCIe link speed to Gen5 mode in the BIOS. With the SSD idling between 52-61℃ and the heatsink fans spinning at 1800-2100 RPM, benchmark tools showed a 12% boost in random reads. My frame times are now rock steady at 5.1-6.4ms on Win11 24H2.
