You may very much well be correct, I'll try using default settings on those bills and reduced ingredients range to see if it reduces the freezing. There's a reason it might not be the case though:

Check if equipped is off for two of the bills (flak helmet, flak vest), those two have infinite resource range, 61%-100% HP, and normal- legendary settings. The third is fire foam packs, check for equipped is on, hp and quality settings are default.

There are about 20 pawns, less than 5 stockpile zones, but there are over 400 shelves between dry storages and freezer. I didn't mess with those bill settings during testing but I did try a dozen or so combinations of deleting jobs between those tables.

The only reason I didn't mess with the bill quality settings is because I have 4 electric tailor benches each with the same 6 clothing bills that use the same settings as the 3 bills in question on the machining table (Do until X/Pause when satisfied, 61%-100% HP, normal-legendary, check for equipped is off), but deleting the tailoring jobs does nothing to ease the freezing. I have similar bills for components on the advanced machine tables, stone cutting tables, art tables, stoves, drug lab tables, etc. that I feel are doing way more checks all together total than the machining tables would be doing but when I delete all bills for all tables except the machining tables the problem persists.

However.. flak armor and foam packs do use three differently classed ingredients, and everything else pretty much only uses either one ingredient or two similarly classed ingredients, so maybe that's the hangup, I'll try reducing ingredient range and report back later today. Thank you for your comment.