An SSD shouldn't get bogged down by copying from an HDD. QLC was a mistake
@matrix@gameliberty.club unlikely but could it be that the SATA connection is what's filling up that graph? Maybe the SATA throughput is fully saturated. If you can buy a better SSD, try using it with SATA as well and see if that will work better or not.
If it still doesn't improve, buying an NVMe SSD might be the solution
@matrix@gameliberty.club got it. Then yeah, it's the shitty ssd