Instagram vps or vpn

Hey guys! Had a quick question, I'd like to be able to run many instagram accounts at a time using firefox, my computer wont be able to handle it and I read on here you should really only keep a max of 5 on one ip at a time, if I want to run my scripts in firefox on instagram accounts, do I need a VPN or a VPS? because I need the ip to be changed and masked from instagram, but I also need it to be able to play in the VPN or VPS without it killing my computer as that'd heavily limit me.

Any help would be great, thank you! I'm not very well versed in these things.