Slow memory card raw import speed (~20MB/s with USB3.0)?

Hi all,
For a long time now, I have been experiencing painfully slow (copy) import speed from memory cards to Lightroom.
For example, importing a fast CF card full of Canon 1D mark4 raw (cr2) photos yields a raw transfer speed of about 18 MB/s . This is ridiculously slow, considering that I'm using 90MB/s rated cards with USB3.0 reader in USB3.0 bus. With that speed, copying one full 16GB card takes over 15 minutes. That really doesn't feel like modern computing to me.
With Blackmagic Disk Speed Test the same device gives read rate of 60MB/s. Dragging and dropping the folder of all raw files in Finder takes about 4 minutes, which corresponds to the Disk Speed Test rating. CPU usage is around 8-10% during import, and standard preview rendering does not start until completing the import. I've also tried the same thing with Thunderbolt-FW800 adapter connected to Delock CF card reader and have pretty much the same results.
Does anyone have similar issues or am I the only one suffering from low transfer speed?
I'm guessing that Lightroom has some ancient algorithms for handling the file copying instead of accessing the memory card with the system file transfer.
Example:
Memory card: Sandisk Extreme Pro 16GB, nominal speed 90MB/s
Reader: Lexar Professional USB 3.0 CF+SD reader
Computer: Macbook Pro Retina 13 2012, 256 ssd
Lightroom 4.3

Thanks for the comment Matulaitis.
I find it rather silly that getting new photos into Lightroom in the first place is painfully slow.
But that's not a problem major enough to be fixed asap by Adobe, I would guess.
Matulaitis wrote:
I finally gave up importing directly into Lightroom due to slow speed and stalling/failing import issues.
Now I copy the files from the card to the folder using another software utility, then synch the new stuff into the catalog.  This works without problems, all same hardware. 
LR 5, Windows 7 64bit, USB 3, tried many card readers, different USB ports, separate USB 3 card, none helped Lightroom.  This is not a new problem, has been present through various versions of LR, though 5 is the worst in this regard for me.
LR would usually work ok for a few files, but almost never has been reliable for a lot of files (say 1000-1500 new files).

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