Slow transfer rate MBWE II white light to PC

Hello guys I am facing a big problem and I hope you could
help me……

After updating to 01.02.10 then rollback to 01.02.06, I had
those issues:

Transfer rate from MBWE II
to PC < 1 MB/s, it begins with 11-12 MB/s then after a while may be after
copying 8-10 % of the file the transfer rate became < 1 MB/s, this happened
to FTP , windows 7 copy.
2.
Booting time takes about 20
minutes….

The box was working fine before this update and rollback,
the boot time was 2-3 minutes, the drive was fast, please help.

Box configured as JBOD, first disk has about 500 GB movies
on shared movies, other disk about 700 GB of ISO files.

Guys, here is what happened to CPU when I am copying a file, may someone can help me:

Load average: 4.16, 2.63, 1.45    (State: S=sleeping R=running, W=waiting)

  PID USER     STATUS   RSS  PPID %CPU %MEM COMMAND
    3 root      RW<        0     2 99.9  0.0 ksoftirqd/0
 4248 root      R        800  4241 37.1  0.6 exe
 4239 root      S       1628  3446  7.1  1.2 sshd
 4013 root      S       3496     1  0.0  2.7 service_ctcs.ph
 3926 nobody    D       3296  3515  0.0  2.5 smbd
 4044 root      S       3168  4043  0.0  2.4 dn_scd.php
 4238 root      S       3016  3515  0.0  2.3 smbd
 3515 root      S       2768     1  0.0  2.1 smbd
 4028 root      S       2616     1  0.0  2.0 service_trigger
 4250 root      D       2364     1  0.0  1.8 bt_status.php
 4038 root      S       2192     1  0.0  1.7 dn_scd_monitor.
 4049 root      S       2192     1  0.0  1.7 php
 3521 root      S       2148  3515  0.0  1.6 smbd
 3523 root      S       1764     1  0.0  1.3 nmbd
 4021 root      S       1028     1  0.0  0.8 mDNSResponder
 4022 root      S       1028  4021  0.0  0.8 mDNSResponder
 4025 root      S       1028  4022  0.0  0.8 mDNSResponder
 3446 root      S        960     1  0.0  0.7 sshd
 2047 root      S <      840     1  0.0  0.6 mini_httpd
 4241 root      S        800  4239  0.0  0.6 sh