No, I don't think so. Used 500+-40 squads and 3 medaled each map on first try.

Don't think you need slow/fast to farm either, cause it doesn't matter if one team reaches end flag faster or slower, you still will go on a speed run around and collect chests/trophies. Thou one could probably argue that with proper balanced per map squad speeds, one could maybe run around for longer before toughing end flag (as that speedy run after that has a limit). Thou in all honesty RNG on nodes will fuck you anyway.

Math thou tells me that with my luck (and thus getting red items out of gachas as last ones) I will probably need to burn some FGs on stamina refills if I will want to get all worth getting stuff.