My best friend just hooked me up with a new PC! An i7 with 16GB of RAM, a something something graphics card with loads of other stuff with acronyms and numbers, so it must be good. Now my Minesweeper doesn't lag at all!
But actually it is currently being used for a game called Empyrion: Galactic Survival. A really fun game that has been very well executed. For me it's a lot of what No Man's Sky promised (the building and resources and fun stuff, not endless exploration), and totally worth a play. Especially if you have someone to team up with!
Minesweeper at 60fps FTW