I was using a 2012 MBP for my first few rides (just got a trainer this winter). It wasn’t bad, but the graphics profile was definitely low end. For the past month I have been using a 2019 16" MBP. It’s like night and day, and the frame rate is quite smooth even when set to maximum graphics settings in the app.
That being said, I do not like using my laptop for this purpose. It generates too much heat for too long of a sustained period. I’d much rather build a cheap dedicated system for it – No Linux support yet? - #32 by James_Sumners