Lag when taking screenshots?

[Thunderclasp]

Hey all, new problem and I'm not sure why it's doing it now. I changed my eqclient.ini ScreenshotType= from bmp to png to reduce the sizes of screenshots, but now when I take screenshots theres a ~5 second lag caused by it. I've changed the ScreenshotType back to bmp, but it still is taking them in png, and still is causing the lag. I've restarted the EQ client, even my computer, so I don't know why it would take the screenshots in png still. Any ideas before I reinstall?