OK well there is NO VR support for IL2 Battle of Stalingrad.
I got a reply from the developer on steam and he said I have to take Vive out of direct mode. Sure enough the sim does run on the Vive in that mode but it's unplayable. You can't see the menus unless you set GUI FOV to zoom out and if you do that then you're not actually in a lifesize cockpit but a miniature one.
There is no real VR support here so I suggest you update your information.
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Launch Steam VR and go into its settings. There, on Developers tab, is 'Disable Direct mode' button. Click it to apply extended mode. Then close Steam VR and run the game, it should display in your Vive instead of monitor.
If it doesn't, make sure or_enable is set to 1 in startup.cfg (it may revert to or_enable = 0 after a failed launch).
OK. Well it does start in VR with direct mode off but it's unplayable. You can't really expect people to play it this way? To start with you can't access the menus because the FOV is too great by default. GUI FOV. When I reduce that as recommended to 0.5 then when I'm in the cockpit it's very small. I'm in a toy plane instead of lifesize.
So the question is how long before you implement WORKING VR?
I purchased this because SimHQ said you added Vive support. Your steam page says you added Vive support but having to switch out of direct mode in steamvr is not acceptable.
I invite people to try it and see what I mean. Imagine Vorpx without the option to adjust FOV or use the image peek feature. That's how it looks.
I'm going to request a steam refund unless you have some sort of ETA for fully operational direct mode Vive support."