DM-29776 revealed that the Gen3 version of ForcedPhotCcdTask uses much more memory than ForcedPhotCoadd, which doesn't make sense given that (for HSC) detectors are half the size of patches and we don't need HeavyFootprints or replace-with-noise in ForcedPhotCcd.

Make sure:

• we're using deferred loading instead of grabbing all overlapping patch catalogs at once;
• we're not not loading HeavyFootprints unnecessarily;
• we're not doing anything else stupidly memory-hungry.

If this ticket fixes the problem, please make sure the new requestMemory values are communicated to operators and the rest of the team.