Yes, I'm concerned about performance too but. Scaling on my 15" rMBP from 2012 definitely looks good, I usually keep it at one step lower (more screen space) th

Yes, I'm concerned about performance too but. Scaling on my 15" rMBP from 2012 definitely looks good, I usually keep it at one step lower (more screen space) than reccomended. If your eyes can take it, you won't loose quality.