Mtb steering

I love zwift, for the first time today I tried the repack ridge mtb section, I was looking forward to this after hearing about it and oh god… I had a terribly bad experience!
The steering was delayed by half a second or 1 second making it impossible to adjust.
I suppose it could be because of my computer, an mac book pro from 2012 (core i5 2.5GHz with 8Gb of RAM) I had no other app running at the same time, and maybe my phone Samsung A8 2018 also no other app running.
Anyone has had similar experience?