MS have upgraded minimum spec of new pcs to 2GB for redstone, saying older 1GB devices may run more slowly. I have upgraded my 1GB tablet to 14388 which is close to final Redstone release.

I am happy to say it runs even better - menus are more responsive etc. Programs execute just as well etc.

See Running 14388 RS1 on 1GB tablet - Windows 10 Forums for more details.