[closed] Bitcore sync speed is 0 blocks per second

Bitcore sync log looks like this:

[2016-02-29T14:27:29.801Z] info: Database Sync Status: Tip: 000000000000000006d9488c448ea7aa6b555923d6a6090a8dfbc77213d6a1d4 Height: 368253 Rate: 0 blocks per second
[2016-02-29T14:27:39.802Z] info: Database Sync Status: Tip: 000000000000000006d9488c448ea7aa6b555923d6a6090a8dfbc77213d6a1d4 Height: 368253 Rate: 0 blocks per second
[2016-02-29T14:27:49.805Z] info: Database Sync Status: Tip: 000000000000000006d9488c448ea7aa6b555923d6a6090a8dfbc77213d6a1d4 Height: 368253 Rate: 0 blocks per second
[2016-02-29T14:27:59.807Z] info: Database Sync Status: Tip: 000000000000000006d9488c448ea7aa6b555923d6a6090a8dfbc77213d6a1d4 Height: 368253 Rate: 0 blocks per second
[2016-02-29T14:28:09.808Z] info: Database Sync Status: Tip: 000000000000000006d9488c448ea7aa6b555923d6a6090a8dfbc77213d6a1d4 Height: 368253 Rate: 0 blocks per second
[2016-02-29T14:28:19.809Z] info: Database Sync Status: Tip: 000000000000000006d9488c448ea7aa6b555923d6a6090a8dfbc77213d6a1d4 Height: 368253 Rate: 0 blocks per second
[2016-02-29T14:28:29.907Z] info: Database Sync Status: Tip: 00000000000000000626b216d467a255f518f2a12566a21f391fed6b26a511c1 Height: 368262 Rate: 0.9 blocks per second
[2016-02-29T14:28:39.915Z] info: Database Sync Status: Tip: 0000000000000000031c75d8fb2c895e45e3ff2ddb8c6fd8e206cc9c8e60aa5f Height: 368287 Rate: 2.5 blocks per second
[2016-02-29T14:28:53.327Z] info: Database Sync Status: Tip: 0000000000000000104e40dd7d8ca4fb034766227870b0cc5c26f86b04119243 Height: 368299 Rate: 1.2 blocks per second
[2016-02-29T14:29:04.955Z] info: Database Sync Status: Tip: 000000000000000006426d7d8ada9ac646cb70dca1e1da5fef9f22d6f4a290f4 Height: 368305 Rate: 0.6 blocks per second
[2016-02-29T14:29:14.955Z] info: Database Sync Status: Tip: 00000000000000000a76681e666adccddd68f9889bfe8fd46cab36c7b0808670 Height: 368310 Rate: 0.5 blocks per second
[2016-02-29T14:29:24.957Z] info: Database Sync Status: Tip: 00000000000000000a76681e666adccddd68f9889bfe8fd46cab36c7b0808670 Height: 368310 Rate: 0 blocks per second
[2016-02-29T14:29:34.958Z] info: Database Sync Status: Tip: 00000000000000000a76681e666adccddd68f9889bfe8fd46cab36c7b0808670 Height: 368310 Rate: 0 blocks per second
[2016-02-29T14:29:44.959Z] info: Database Sync Status: Tip: 00000000000000000a76681e666adccddd68f9889bfe8fd46cab36c7b0808670 Height: 368310 Rate: 0 blocks per second

Sync speed was about 10-20 before (when blockchain was on intenal SSD), but when I moved blockchain to external HDD drive sync speed dramatically fell down.
Is it normal and is due to external drive read/write speed or it might be fixed someway?

Problem isn’t actual for now.
I beleive, that sync speed fell because of moving datafiles to external drive, which is much slower, than internal SSD.