Defraggler is also extremely slow on my system:
System specs: Win7 x64 (fully updated), 16GB Ram, 240GB SSD (60% full), Defraggler v2.11.560, latest Intel AHCI RSST drivers
Last Defrag: Probably never (it's a SSD). I did have some files which were literally fragmented in hundreds of thousands of parts, therefore I wanted to defrag it once (i know you should not defrag SSDs because of wear, please don't lecture me about this - i know what i'm doing).
Defraggler uses 100% of one of my CPU Cores (Core i7-2600k) and is slow as hell. Takes >15 hours for the whole SSD. The hard drive light only blinks occasionally.
The defragmentation is absolutely CPU limited. Not really sure why it should be though. Disk is hardly active at all. IMHO there is quite a significant bug here. Perhaps it doesn't like the Intel RSST Drivers or the version 2.11.560 is buggy in all cases?
When running Microsoft Defrag on the same system, the HDD activity LED is on almost constantly and CPU usage is less than 1/4th of one core.
