MySQL - Slow InnoDB Write Speeds on Windows 10
RECOMMENDATION #1
You have innodb_thread_concurrency at 17. It really needs to be zero(0). Why ?
Rather than rehash stuff I wrote in the past, please read the 7 posts I wrote about innodb_thread_concurrency being the best choice at 0.
RECOMMENDATION #2
Using a small log buffer can be a bottleneck when writing to the redo logs.
Please read my 3-yr-old post MySQL transaction size - how big is too big? why it should be bigger
I recommend innodb_log_buffer_size being set to 128M
RECOMMENDATION #3
The redo log needs to larger as well. You have
You have innodb_log_file_size at the default size for MySQL 5.6 : 48M
I recommend setting innodb_log_file_size = 1G.
RECOMMENDATION #4
You have flush_time set to 0. IMHO For any Windows OS, that's a big NO-NO.
The default is 1800 for Windows. I don't trust MySQL flushing to disk every 30 min in Windows.
I recommend flush_time to 300 (every five(5) minutes)
RECOMMENDATION #5
You should increase the IO threads
The defaults are
innodb_read_io_threads = 4
innodb_write_io_threads = 4

Percona Server's defaults are
innodb_read_io_threads = 8
innodb_write_io_threads = 8

You should start with 8 for both innodb_read_io_threads and innodb_write_io_threads.
GIVE IT A TRY !!!
I have so much more to recommend in terms of per-connection buffers : How costly is opening and closing of a DB connection?