Blinking of the screen after the Big Sur update

Please tell me if you can somehow help yourself to be able to play Heroes of the Storm?
After updating the operating system to Big Sur, it became virtually impossible to play-during the loading of the match, the screen starts blinking and the match itself does not turn on.
If at this time you forcibly exit the game and reload the match, the match blinks already.
Can you help me?
I have no idea how to solve the problem - reinstalling the game, changing and resetting the graphics settings-did not lead to any changes.

MacBook Pro (13-inch, 2018, Four Thunderbolt 3 Ports)
2.3 GHz 4-core Intel Core i5 Processor
memory 8 GB 2133 MHz LPDDR3
Intel Iris Plus Graphics 655 1536 MB

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