I own a Lenovo ThinkPad X240, which I recently upgraded with an Apacer 64GB M.2 SATA SSD. Initially, I migrated the OS from the HDD, and deleted everything from it. After doing so, boot time and performance were very sluggish. Processes in task manager didn't prove anything, with CPU, GPU, memory and disk usage all being below 50%. Checking the performance tab shows the SSD constantly peaking at 100% active time, commonly without a single break in the graph. The response time varies, but reaches as high as 5000ms. Meanwhile, read/write speeds vary as normal, from absolutely nothing to about 40MB, as they should be. I completely wiped the SSD and HDD and reinstalled Windows 10 from scratch, same issue. I'm confident it's not a program causing the problem, so what are my options? If I have none, is there a way to determine if the the SSD is faulty, or maybe the device is at fault?