A. Make sure your config (options.spriteElementPath) is pointing to the folder containing your source svg files.
B. If you are using Adobe Illustrator to produce or save your source svg files - ensure the Responsive option in the "More Options"panel is unticked:
This is most likely due to one or more plugins in the svg minifier (svgo) used in the sprite builder. If you run into those edge cases disabling plugins can be done via options.svgo. At default the following plugins are disabled: moveGroupAttrsToElems, collapseGroups and removeUselessStrokeAndFill.
If you are unable to find the plugins causing the problem create an issue here and submit as much relevant data as possible.
Most devices have a maximum allowed buffer for images - if that buffer is exceeded you might experience your sprite either not getting displayed at all - or it getting downsampled. It's hard to give precise numbers as the maximum buffer varies from device to device - but for iOS it's 3 megapixels (3 * 1024 * 1024 = 3,145,728 pixels) for devices with less than 256mb ram and 5 megapixels for devices with more. As long as your sprite width times height is below the 3 megapixel range you should be good.
References: