Running the game off an SSD could induce stutters in the game if you have skins downloading in the background.
The weakness of an SSD comes to when a file is to be updated or even change the name of a file. On an HDD updates or name changes are much faster as HDD's can overwrite information.
When a skin comes down from the server, it is stored as a temporary file until the file can be verified. The OS actions for this operation are about the same for either the SSD or HDD. The difference comes when it is time to rename the file to its new name and put it in the skins folder.
SSD's cannot update information of a file. A name change on an HDD is a very fast operation as it can change data stored on the disk. An SSD has to read the original file into a temporary system RAM location. Erase the original, the write the entire file again, to its new name and location. This takes a lot longer than an HDD does. It could stall the game.
For those of you who are running Aces High III on your SSD, disable skin downloads.