Suggestion: Multiple scan on multiple disks
No antivirus has ever implemented this feture as a suggestion: Allow when performing a quick or full scan to perform multiple scans on multiple disks for better performance, instead of being sequences by partition letters C:\, D:\, E:\, etc.
The antivirus could detect through Windows which are your physical disks or SSDs and their lettrs and perform sequentially only if they are partitions of the same disk, examples:
Disk 1: Partitions C D
Disc 2: Partitions G H I
Disk 3: Partition Z
This way the scan would at the same time scan the partitions C, G, Z. And as soon as it finished, C would go to D, and when it finished, G would go to H, and so on.
For sure the performance would be better, because the CPU usage is not more than 5%, only 100% disk, but one disk at a time in the current scenario.