My top of the line iMac keeps freezing when playing games

Is CounterStrike GO a game that actually runs on your iMac or is this an online game?

Since this is a new iMac, you have one free year of AppleCare. Use it!

Make an appointment with an Apple Store for diagnosis and repair.

Demonstrste your issues to the genius so they can see the problem.

Have you had this iMac for less than 14 days?

If Apple finds an issue and you have had this iMac less than 14 days, you can return the iMsc for a full refund and re-order another brand new top of the line iMac that may not have a hardware issue.

In the future, Consider purchasing extended AppleCare before your first year of ownership expires.

If you let your free first year of AppleCare expire, you won't ever be able to purchase and register for the extended warranty, again.

Good Luck!

One thing you can try is to make sure you have a minimum of apps open, running in the background.

According to the game's specs, you more than exceed to mimumum requirements to play the game.

Do you play this alone or is this game designed to be a online multiplayer game?

Do you play this game online even though the game resides and launches from on your iMac?

Does this feel like it could be an Internet issue.

Are you using a broadband connection and, if yes, what is the average speed of that connection?

Are there any other computers or devices that share this connection and, possibly, get used at the same time?

Have you tried dropping the resolution of your iMac's screen down to a slightly lower resolution instead of the iMac's native resolution of 2560 X 1440?

First, Did you buy the computer from Apple with 32gb of ram or did you or a reseller upgrade it?

Next, is your iMac having a kernel panic? http://support.apple.com/kb/TS3742

If so post a recent panic log http://support.apple.com/kb/HT2546?viewlocale=en_US

You haven't answered any of my questions.

It could very much be a Internet connection issue if you do not have sufficient bandwidth speed.

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Okay.

I do not know how multiplayer online games work, but I would imagine that you are accessing some sort of gaming server for online multiplayer gaming and that means your are both downloading control events and uploading control events,as well? It may very well be that 1 Mbps upload could be a bottleneck for data transfer.

I simply do not know.

All I know is if you were just playing this game from your Mac as a single player and no Intenet connection, your iMac would, probably NOT be experiencing these issues.

AND, if 20 Mbps per second is your purchased, top Internet speed, depending on how busy other user are accessing the Internet and sucking up bandwidth from your ISP, the bandwidth from your ISP can very greatly and can have an impact on your Mac's actual Internet speeds.

SInce this is real-time online game, it is possible that your Mac can freeze up with trying to send and receiving real time player commands over the web to the game servers and back to client computers.

What this amounts to is that there are too many variables that can affect your Mac's performance is this situation.

Is there any other way to test your iMac by playing this game, locally, without Internet access, as a single player to see of your iMac crashes in this situation?

That would rule out issue that are directly related to your Mac hardware.

I agree, the top of the line iMac should handle the most demanding game. Are you running anti virus or cleaning software?