Game crashes even on MacBook Pro 13 with a supported video card

Hello,
I would like to get back to the issue from my previous topic.
I have decided to replace my computer for a Pro version.
This version has Intel Iris card inside which is stated as a supported video card.
Disregards that, I m receiving same issue during my gameplay, so when I chat the game encounters a failure and crash.
Is anybody keen to assist me please?
Its sometimes more stable but kinda stays with a high risk of a crash.