[操作疑難] XPS12 9250 上左win10 1803之後效能暴跌

inori

我部Dell XPS12 9250早幾日都好地地
琴日upgrade左去1803之後就覺得慢左
用CDM行一轉之後發現比1709果時iops慢左勁多
SSD係M8PeG
我已經試過直接clean install 1803
重裝1803唔知點解defaultbitlocker係開(1803係咁？)
初頭以為係encryption問題攪到慢左
但係turn off左之後都係差唔多
有無ching都係咁/知點解？

上面係1709,下面係1803

-----------------------------------------------------------------------
CrystalDiskMark 6.0.0 x64 (C) 2007-2017 hiyohiyo
                          Crystal Dew World : https://crystalmark.info/
-----------------------------------------------------------------------
* 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) :  1546.596 MB/s
  Sequential Write (Q= 32,T= 1) :  1017.429 MB/s
  Random Read 4KiB (Q=  8,T= 8) :   923.239 MB/s [ 225400.1 IOPS]
Random Write 4KiB (Q=  8,T= 8) :   624.850 MB/s [ 152551.3 IOPS]
  Random Read 4KiB (Q= 32,T= 1) :   427.266 MB/s [ 104313.0 IOPS]
Random Write 4KiB (Q= 32,T= 1) :   343.588 MB/s [  83883.8 IOPS]
  Random Read 4KiB (Q=  1,T= 1) :    43.331 MB/s [  10578.9 IOPS]
Random Write 4KiB (Q=  1,T= 1) :   113.410 MB/s [  27688.0 IOPS]

  Test : 1024 MiB [D: 4.2% (13.6/325.6 GiB)] (x5)  [Interval=5 sec]
  Date : 2018/06/04 6:34:25
    OS : Windows 10 Professional [10.0 Build 16299] (x64)
    Plextor M8PeG 512GB @ XPS12 9250 4K

-----------------------------------------------------------------------
CrystalDiskMark 6.0.0 x64 (C) 2007-2017 hiyohiyo
                          Crystal Dew World : https://crystalmark.info/
-----------------------------------------------------------------------
* 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) :  1583.881 MB/s
  Sequential Write (Q= 32,T= 1) :  1011.940 MB/s
  Random Read 4KiB (Q=  8,T= 8) :   426.200 MB/s [ 104052.7 IOPS]
Random Write 4KiB (Q=  8,T= 8) :   511.159 MB/s [ 124794.7 IOPS]
  Random Read 4KiB (Q= 32,T= 1) :   240.319 MB/s [  58671.6 IOPS]
Random Write 4KiB (Q= 32,T= 1) :   190.198 MB/s [  46435.1 IOPS]
  Random Read 4KiB (Q=  1,T= 1) :    37.369 MB/s [   9123.3 IOPS]
Random Write 4KiB (Q=  1,T= 1) :    81.323 MB/s [  19854.2 IOPS]

  Test : 1024 MiB [D: 4.2% (13.6/325.6 GiB)] (x5)  [Interval=5 sec]
  Date : 2018/06/05 16:22:01
    OS : Windows 10 Professional [10.0 Build 17134] (x64)