Recently, in Humankind Victor OpenDev I faced many performance issues like lagging, crashing to the desktop and audio and video delay. These issues gave me a major reason to no to preorder Humankind as it will be a waste of money if the game is not suitable to my laptop. I then bought Endless Space_2 and there were minor performance issue, so I set the graphics level to Fastest and then there were no issues in the game. So, I got some hope that Humankind Game might less lag with less graphics setting as OpenDev was Beta and many people faced the same issue. I have are the AMD Radeon(TM) R4 Graphics, is this graphics card suitable? Please tell anybody.

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Also one more thing-

There was this Unity Warning Message after my first 7 turns and then the game crashed. Does anybody else experienced this? 

Well, as you've guessed, Humankind's OpenDevs are not optimized builds. So performance issues are indeed expected, even with good setups.

For comparison, I have a HP Pavilion Gaming Laptop with AMD Ryzen 5 4600H processor (3.00 GHz), 16 GB RAM, and GTX 1650 Ti Graphic Card. Though this setup is meeting both minimum and recommended requirements for the game, I had the same issues you're describing above when playing Lucy and Victor OpenDevs.

Now, I'm not a computer expert, and I don't know about the specifics of your graphic card and your computer, but I'd advice you to check minimum/recommended requirements, and see if your computer meet them.

- On Steam : https://store.steampowered.com/app/1124300/HUMANKIND/

I usually also check 2 usefull websites that help me know if my computer can run a particular game :

- https://www.pcgamebenchmark.com/

- https://www.systemrequirementslab.com/cyri

Both sites propose a tool that checks your system to see if it meets the game's system requirements.

Hope this helps.

Cheers !