Connect speed to server significantly reduced.

Migrating to HP Elitedesk 800 G2 Mini for a PLEX server. Have 4 hard drives connected to said server by USB 3.0 using a Sabrent DS-SC4B. Running Rasperry Pi OS (X86). So used to using RasPi OS that it was something I had familiarity with. Everything has been going smoothly but today I noticed that when I transfer a file to a server drive that there is a significant reduction in the speed of the transfer. Using Filezilla to transfer files. Filezilla uses MiB/s to donate size, initially I was getting about 50MiB/s on NTFS partitions and approx. 100MiB/s on Linux partitions. Now all I'm getting is apporx. 10MiB/s regardless of what drive type I am transferring to. Checked USB driver status. pi@elitedesk:~ $ lsusb -t
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/10p, 5000M
|__ Port 2: Dev 2, If 0, Class=Hub, Driver=hub/4p, 5000M
|__ Port 1: Dev 3, If 0, Class=Mass Storage, Driver=uas, 5000M
|__ Port 2: Dev 4, If 0, Class=Mass Storage, Driver=uas, 5000M
|__ Port 3: Dev 5, If 0, Class=Mass Storage, Driver=uas, 5000M
|__ Port 4: Dev 6, If 0, Class=Mass Storage, Driver=uas, 5000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/16p, 480M
|__ Port 2: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
|__ Port 3: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 3: Dev 3, If 1, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 5: Dev 4, If 0, Class=Human Interface Device, Driver=usbfs, 1.5M
Looks good. Check connections speed.pi@elitedesk:~ $ ethtool eth0 | grep -i speed
Cannot get wake-on-lan settings: Operation not permitted
Speed: 1000Mb/s
Looks good. Next check duplex.pi@elitedesk:~ $ sudo dmesg | grep -i duplex
[ 26.215215] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx
Looks good also. Don't know what else to try. Any thoughts. Any help is much appreciated.