I have a laptop. Whenever I try Minecraft and look in the Task Manager there's 2.9Mb / s and the top says that the volume is 100% busy. But if I make a virus scan, for example, then there's 120Mb / s and the disk utilization is also at 100%. Why is Minecraft also 100% utilization. (Meanwhile there were no other processes) Why is this?
HDD / SSD?
Because it makes a difference whether you need to access many small files or read over a large area. Especially with HDDs.
In addition, the memory area in which MC is located can be highly fragmented. Or also faulty.
An SSD that can only read 120 MB / s should not exist. If, then we have the explanation, the SSD is then obviously defective.
At this underground speed certainly an HDD.
Minecraft has a lot of small files that load your HDD heavily because of the 100% load, but there's no need to act it's too slow for you, then only one SSD will help