USB Transfer rate drops hard on large files

[Drowz0r]

You can also try ionice. It helped with a previous USB bug.

Could you explain?

[1fallen]

From the man page:

IONICE(1)                        User Commands                       IONICE(1)

NAME
       ionice - set or get process I/O scheduling class and priority

SYNOPSIS
       ionice [-c class] [-n level] [-t] -p PID...
       ionice [-c class] [-n level] [-t] -P PGID...
       ionice [-c class] [-n level] [-t] -u UID...
       ionice [-c class] [-n level] [-t] command [argument...]

DESCRIPTION
       This  program  sets or gets the I/O scheduling class and priority for a
       program.  If no arguments or just -p is given, ionice  will  query  the
       current I/O scheduling class and priority for that process.

       When  command is given, ionice will run this command with the given ar‐
       guments.  If no class is specified, then command will be executed  with
       the "best-effort" scheduling class.  The default priority level is 4.

Your specs are about identical as mine, I don't see the slow speeds in transfers as you do though.
BTW I don't have to use ionice though.