What is the fastest for best value AWS Instance type (or alternative virtual machine service) for performing fast EA optimisation?


I am trying to optimise some inputs for my EA on AWS free tier (t2 micro) and it is obviously extremely slow.

I am not a computer genius so don't really know what specs I need but can anyone recommend the best value Instance type that will get the job done quickly? (or alternative virtual machine service I may not be aware of)