how is the limitation of log throughput on TEL0147 Serial Data Logger?

hello, everyone.

I just start trying to get log with TEL0147 Serial Data Logger v2.0.0.

Now our application output log through UART which is 3-axis acceleration numbers per line every 1ms for approx. 20 seconds.

So the log file will be 20000 lines or so, but my TEL0147 left file with few lines or less than 50 lines.

Is it too fast and have to reduce throughput?

Is there any specs or guidelines of limitation about throughput?

thank you.