I'm afraid the game is indeed quite heavy and might require some good setup to work properly. What's your configuration?
Well, the inner working of Unity can be tricky. I'd need to check the log files if you have any. Could you check if you have a folder there and send me any files in there :
C:\Users\[user]\AppData\Local\CompanyName\ProductName\Crashes
Otherwise, check here too :
C:\Users\[user]\AppData\LocalLow\CompanyName\ProductName\Player.log
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