This setup configuration doesn't have a backup plan. We strongly recommend to add a backup solution for your data so that you can restore it in the case of an emergency.
Backing up allows the recovery of data that has been lost due of a malware attack (eg. ransomware) or a hard disk crash. In such events you might lose family photos, your music collection, documents, or financial data. Backups are fast and simple to perform so it should be done on a regular basis.
Can you test with crystaldiskmark?It's definitely lighter than KSC. But I noticed that it slows down disk operations a bit, without increasing the disk usage. I guess It's because of cloud signatures?