怎麼速度這麼慢！(SAMSUNG三星 T7 Shield 1TB USB 3.2 移動固態硬碟)

測出來才跑44請問怎麼回事
接口usb3.0
線材使用外接硬碟內付的

電腦規格
Operating System
Windows 10 家用版 64-bit
CPU
Intel Core i9 9900K @ 3.60GHz 37 °C
Coffee Lake 14nm Technology
RAM
16.0GB Dual-Channel DDR4 @ 1203MHz (15-15-15-35)
Motherboard
ASUSTeK COMPUTER INC. TUF Z370-PLUS GAMING (LGA1151) 32 °C
Graphics
4095MB NVIDIA GeForce GTX 1080 (ASUStek Computer Inc) 46 °C
Storage
476GB INTEL SSDSC2KW512G8 (SATA (SSD)) 24 °C
1863GB Western Digital WDC WD20EZRZ-00Z5HB0 (SATA ) 29 °C
3726GB Western Digital WDC WD40EZRZ-00GXCB0 (SATA ) 29 °C
931GB Seagate FireCuda 520 SSD ZP1000GM30002 (Unknown (SSD))
更：
傳輸3.XGB的檔案一開始有衝上1000後直接掉速度