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Huge slow down in disk IO after Cumulative Update KB4471332 !
so I managed to install the December 2018 Cumulative Update KB4471332 over windows build 1809 , end result was that disk read/write slowed down significantly . now I can copy things back and forth across drives in 40 MB/s speed cap while earlier to installing the update I averaged 60~100 , I revised the drivers and to my surprise the update haven't changed any of them . I have stuttering in games due to slowed down disks too . I tried to uninstall it from installed updates in programs and features but it doesnt show there , only few updates done earlier regarding ms office . and yet the update is surely installed and to my surprise system restore service was not working . so it kind of seems more like a microsoft punishment than rather an update , anybody know how to solve this ?