I have finally returned to the CNC.... and there be issues

I would suspect it is either your feed settings or rigidity of your router. I had no issues cutting aluminum with my older 525 version MPCNC. I used these bits:

https://www.amazon.com/HQMaster-Carbide-Router-Acrylic-Hardwood/dp/B010NI39WO/ref=pd_d_sim_b2b_1/145-7799280-3545728?pd_rd_w=OixB6&pf_rd_p=c1143869-a7d7-4cfd-bf9c-0da7305c3e64&pf_rd_r=E4G45419X4HQ11ZV5XF3&pd_rd_r=aa855136-2ab0-4ae4-ba9b-a966740f6d36&pd_rd_wg=5GvKq&pd_rd_i=B010NI39WO&psc=1