Btw.: Just as a side note as well: We tried to initially get rid of the rain (and from there enable it in small iterations until it fits our needs). However, we tried it with the following config:

Not sure, if it was actually this specific fix they made, but now it works again :D

Update:
Even with the last Dev channel insider preview (21332), the problem persisted.

I'm using an intel ethernet and an intel wireless adapter, so it _might_ be not related, but still could be. Would be interesting to know how we could verify that? I mean, I had this problem with the prior insider build as well (however, the issue might be in this build already). Like I said, other games with in-game voice chat works as well, so it might be a specific way how arma interacts with the network or audio devices? I might also open an issue with Microsoft as well, so maybe they can confirm it is this error.

If it matters as well, it's Windows 10 Pro.

Okay, I just tried to reproduce the error on another computer ( a little notebook, bad fps bud good enough to see if the screen freezes).

Did the remapping thing already. I just tried it again with a fresh soldier profile (and remapping from tab to alt gr for the push-to-talk key). Have the same issue still :(

Okay, now I did the following as well:

• Reinstall ArmA 3 (not verifying the local files with Steam, only, which I did already, a complete, fresh install, apart from the profile)
• Uninstall all audio device drivers apart form the ones which are connected (the 3,5 inch cable headset as well as my monitor, which is connected via HDMI, and a virtual device from NVidia)
• Uninstalled a separate sound card from the computer (via PCIe) and used the onboard audio connectors from my mainboard

I mean, is there some way to debug what could be the reason for auch a freeze when the push-to-talkis hit? Maybe some flag I can start arma with to get some more info on the RPT?.

I did that already. I also verified the files of arma in strand and also rolled back to the last windows version. Nothing helped.

Yes, the problem can be reproduced in aN MP 3DEN editor mission as well.

Just saw, that the video was still in draft, published it now, sorry!

I just tried to troubleshoot or pinpoint the problem a bit further. It seems, this issue is _not_ related to the USB mic (like I read on the internet several times). I disconnected the A50 headset from my computer and used a cable-connected 3,5 inch headset which I had here and I can still reproduce this issue. Whenever I press the push-to-talk key the game freezes for around a second.