marcamos's post in Scaling a *huge* SVG by a *large* number = blurring / stuttering was marked as the answer
Update! After speaking with the client, we're splitting up the gigantic SVG into multiple smaller SVGs that will have far less data and can be strung together with little transitions between them. I've been working on this adjustment for a few days now and it's much better. Thanks, again, for everybody's help!