As I mentioned earlier, I haven't seen any memory or performance issues on my system in LabVIEW 2015 32-bit, so I don't think it's a memory issue. I also don't think it's a USB issue since the no recording version of the VI works without issue - I'd expect to see the bottleneck there as well if this was a bus problem.
Reducing the resolution reduces the amount of data that needs to be written to disk, so given that a lower resolution (less data) works better, it still makes me think there's some bottleneck somewhere in your system (hardware, OS, or something else) that's liminting your disk write speeds. Given that it runs fine on my machine, it doesn't look like it's something inherent to LabVIEW on it's own, but I suppose it could be some combination of the efficiency of the LabVIEW/the AVI Write file + your computer's hardware setup.
Is the 3rd party software you mentioned using the same AVI codec? What software are you using? Are all of the other write parameters the same? Without knowing more about how that software might be performing it's write, it's hard to speculate as to why it may be working more efficiently than the LabVIEW write.
Ryan K.
Product Manager, ATCA and BEEcube
National Instruments
