try turning your smoothing rate up so your paths don't take sharp corners which forces feeds to decelerate, and keep the tool in the cut with a trochoidal path so not a ton of lead-ins and lead-outs. do you have a tool magazine on your gantry mill?
it's plywood....turn up your feeds/speeds and chip load and run two flute high helix high feed end mill. if your desktop mill doesn't have the rigidity to go full flute length on your z-depth toolpath then do a roughing op with much larger tool and then come back with your ball mill to ball...
looks like I missed registration by a few days. who's selling spots, or how much does a sponsorship cost? I'm not opposed to sleeping up at altitude with the goat headers..