There isn’t a LCS in my area that offers bulk submissions, so I thought I’d try doing one through GameStop. I dropped the order off on January 18th, and it was just now scanned in by PSA. The guy at the store said to expect a 90-day turn around on these, so the timeline seems right so far.
Also worth noting that the vast majority of submissions at GameStop are for TCG, not sports. Just an incredible amount of Pokémon getting sent in right now.