SSD not performing as expected

Feb 7, 2019
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I own a Kingston A400 240gb,I've never noticed anything wrong with it, but the benchmark results are way below average, I don't know why this could be happening.

https://ibb.co/jLStm75

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CrystalDiskMark 6.0.2 x64 (C) 2007-2018 hiyohiyo
Crystal Dew World : https://crystalmark.info/
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* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

Sequential Read (Q= 32,T= 1) : 555.980 MB/s
Sequential Write (Q= 32,T= 1) : 463.778 MB/s
Random Read 4KiB (Q= 8,T= 8) : 182.404 MB/s [ 44532.2 IOPS]
Random Write 4KiB (Q= 8,T= 8) : 17.852 MB/s [ 4358.4 IOPS]
Random Read 4KiB (Q= 32,T= 1) : 170.935 MB/s [ 41732.2 IOPS]
Random Write 4KiB (Q= 32,T= 1) : 17.760 MB/s [ 4335.9 IOPS]
Random Read 4KiB (Q= 1,T= 1) : 22.831 MB/s [ 5574.0 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 17.668 MB/s [ 4313.5 IOPS]

Test : 1024 MiB [C: 42.2% (94.0/222.9 GiB)] (x5) [Interval=5 sec]
Date : 2019/02/07 11:25:58
OS : Windows 10 [10.0 Build 17134] (x64)