>>106563337 (OP)
Inter-VLAN traffic takes some CPU so home routers might not give much throughput. I had a Mi Router 4A and it gave 200-250 megabits going from VLAN to VLAN. Now I have a mini pc with an i3-10110U and it handles everything very well. You don't need a router with many ports, you can get a cheap smart switch like mine, TL-SG1016DE.