SD / speed problem

Hi everyone!

I am new to 3d printers. I just got my "refurbished" Flash Forge Creator Pro in the mail and have happily done about half a dozen 6 hr prints over USB.

Now I am trying to use the SD card and haven't had a successful print yet (even when running the same job that I did over USB). It seems like the feedrates are noticeably faster when running off the sd card. I think this excessive speed is then causing skipping midway through the print that leads to a slanted finished product.

Any thoughts?

I am printing ABS and have my feedrates set to 60 and 80.

Thanks,
Matt