Ah. Well, you could try installing the software using Compatibility Mode (maybe try Win7 first?) but it sounds like, whether or not the drive is in fact a great deal, it has lousy firmware. Unless you can flash an update to it that fixes the problem, your best bet would simply be to try making sure Windows never attempts to "optimize" the drive.
Of course, unless you remove or edit the files on there, there won't be any fragmentation anyhow. So attempting defrag probably wouldn't do anything in any case. Similarly, if you aren't deleting files then you don't need to TRIM their data, so the usual optimizations for SSDs don't matter much either. You might want to see if you can disable access-time updating for the drive though, as that's very wasteful on an SSD (you can globally disable access timestamps using fsutil, but I don't know if you can do so for a single drive on Windows).