You are using proxies and you don’t even know it 😂😝😂😝🤣😝😝😝😝😂😝😝😂😂
Myself included, Mac Pro users who spend thousands, PC builders who spend thousands, all latest most powerful hardware in the world CANNOT playback and Edit Red Raw footage smoothly without proxies.
What you are seeing on your measly 2013 laptop is the video being cached/background rendered into a proxy. You even admit to having lowered the resolution to reduce the proxy bit rate.
If you could play proxyless Red on your laptop Apple would never have invented the Afterburner card. Red Rocket wouldn’t be for sale either.
Play those videos outside an NLE in a player such as Red Player to see if a system can handle proxyless playback.
Get educated first before you reply to professionals. Thankfully you didn’t say that to someone in a hard working studio otherwise all the editors would have eyeballed you.