When should I upgrade my VPS?

Will the VPS just start working very slowly, or will Jarvee be unable to complete all actions while the VPS still is fast enough to control?

My task manager says Jarvee only uses less than 10% of CPU.

technical data of VPS?
how many profiles on J*V?

It’s the Amazon free VPS, 8 social profiles now.

I thunk for 8 accounts its ok. When you scale you will need an upgrade.

My question is, when will I know that I need an upgrade?

When Jarvee actions are not completing, VPS seems slow, task manager says it uses too much CPU, or another metric?