tango4

I'm joining this old topic because it seems that I have the same issue (using latest open beta as of today). Anything new about it ? Charles

Well, I think I finally solved it and it was indeed a problem on my system, and apparently not hardware related. I started relating those strange issues in DCS 2.5.6 beta to other issues that appeared on my system in recent months. After investigating (a lot) I started suspecting something on my windows install. So I decided to use Win 10 built in reset feature and chose the option to erase everything. Unfortunately all my issues were still present (including the fact that 2.5.5 was working flawlessly). So in a desperate move, I created a bootable USB flash drive to re install Windows 10 the hard way after a complete formatting. And my issues were ALL gone. I still have no idea what happened but for some reason my windows got corrupt. Anyway, thanks for trying to help me. I'll now go wait patiently in the waiting room for the supercarrier ! Charles

I just freed some more space on my SSD so I was able to move release version on it. So now I have both versions installed side by side on my SSD. I was missing DCS too much! I can confirm release version working flawlessly. I'll keep openbeta in case you want me to run some tests. Have a nice day. Charles

I just made a try reverting my BIOS settings to default (no overclocking, all voltage and freq to auto, etc). No difference.

As we are talking CPU, could it have something to do with AVX instructions ? Anything changed regarding this in 2.5.6 ?

CPU is a Core i7 9700K overclocked to 5Ghz with Corsair H115i Pro watercooling. FYI, I tried reverting my CPU clock to see if the issue disappeared when you first mentioned possible hardware issues, but did not see any difference. Here is a link with screenshots from my phone. As a bonus, a screenshot while someone was waiting with me for the update to complete yesterday...:music_whistling: https://www.dropbox.com/sh/pn1blf2hzx75can/AABV5XJTeCYKlG_PhDSxvvMga?dl=0

Here are two logs : *First one, I started release version, clicked on instant action, persian gulf, a10c, free flight. Game launched ok. I quit. https://www.dropbox.com/s/wbdhbqbfa04gsnp/dcs.log?dl=0 *Second one, I started open beta. For some reason I had sound in the menu (do not know why). I then did exactly the same thing. It crashed very shortly after clicking free flight. https://www.dropbox.com/s/yebm2ywtjo8dg05/dcs.log?dl=0 If you need some other logs,, now that you know where I am with my install, I'll do it without a problem. Just tell me exactly what you would like me to do. Charles

Some more info: *It seems that in Openbeta I am basically unable to load anything on a Non default theater. *My release version is a bit difficult to play because I have now micro freezes. I guess this is due to the fact that it is now on a HDD which is a bit slow, because yesterday, while release was on my SSD I had no issue. I'll keep it like this for a few days to see if you can help me, but does not seem playable. If not, I'll revert to release version on my SSD.

Okay small update as to where I am now. As mentioned before, I started from scratch today, after deleting everything by re installing DCS Openbeta on my SSD (which is my main disk with the OS and P3DV4). Up until now, DCS had ALWAYS been installed on this disk. I started by installing the release version several months ago. I then moved to the openbeta by using the command line. I had no major issue until 2.5.6 series. Each time I moved back to release version, my issues (both audio, and various crases when loading missions) stopped. This afternoon, I re installed DCS release version on my secondary disk which is not an SSD. It just finished installing. I can confirm TWO THINGS: *On Open Beta, I have the "NO SOUND" issue; I DO NOT have this issue on release *On open Beta if I select instant action on the P51, and any mission on the Normandy theater it crashes when loading. On release version, It IS WORKING OK So I am completely at a loss here and something strange is going on. Perhaps during the install process ?

But I can load the P51 in Caucasus. Still downloading release version on my hard drive. My internet connection is getting tired ;)

Actually, no I did notice that. I own most t WWII modules, Normandy map, and WWII asset pack. In release version I can load P51 instant action from Normandy map. In openbeta it does not work. But I did not want to clutter the topic here as I thought it was irrelevant.

And just to confirm I ran memtest for a few hours on my RAM and it reported no issue. Any idea how to test my SSD and hard drive ?

Clearly I am not saying that my hardware has no issue, after all this is a computer. But it has no issue that I am aware of. But even if my hardware has an issue, it does not explain why the release version is working flawlessly and I have this issue in openbeta, no ?

Okay, after starting DCS again and again, eventually I got to the point where I had music in the menu. Here is a link to my log file immidiately after this run: https://www.dropbox.com/sh/o3q8zl424syns1p/AABgaDFbYqVUJsXIor3LsNKva?dl=0 Do't know if that can help.

And I am afraid installing DCS release aside will be a bit much on my SSD. I'll think I'll try and install release version but on my hard disk instead.