The previous posts from Boone illustrates precisely the issue: this was discussed so much, here and on such many forums and of course, the problem is not CYVR in itself, but simply the fact you are running too many add-ons in THAT area, with a too memory consuming airplane AND with too high settings.
The combination of all above, result in having exhausted your memory and FSX, being a 32 bit app, will never, ever, use more than 4GB or RAM. In fact, the out of memory message comes before that, so it really can't use even the full 4GB, but something less.
The solution, as discussed in many other threads is one of the following:
- Lower your settings
- Don't use so many add-ons at the same time in that area
- Use a different airplane
- Install CYVR with lower resolution textures, the installer clearly indicates an estimate how much RAM/VRAM each setting will take
- Use DX10, this will lower RAM requirements too.
Of course, you can also use a combination of all above. For example, using DX10 AND install CYVR with, let's say, 2048x2048 textures for ground and 1024x1024 textures for dynamic shadows, should result in saving about 500-700MB, without having to renounce to anything else of the other add-ons you are using in the area.