Heavy Stutters near enemy planes on ATAG

[phoenix1963]

I'm bumping this for several reasons:
1. The problem is still there in Beta v.1.08.18956.
2. It was MUCH less severe in an earlier version and surely that much should be achievable again.
3. It seems to be strongly associated with human controlled enemy 'planes.
4. Though I mostly fly red - I find it worst against multiple human 110s, does anyone have the same for Red bombers?
5. It is extremely severe, I'm dropping from ~50fps to <1fps, but it doesn't happen with friendly 'planes, why?
6. It gets worse when you zoom the view.
7. It's not just ATAG, the recent SoW Campaign had the same.

Now for some discussion:
Vranac and others reckon it's worse for lower power CPUs - and I do have a Q9550 @ stock 2.83 Ghz. But I also have an AMD 6970 2GB (actually it's a flashed 6950), so texture manipulation alone should not seem to be the problem.
A number of questions occur to me: is this some weird aliasing-in-time effect because the non-ai 'plane information makes the packets large and broken-up, leading to a sort of beat-frequency effect on the screen refresh?
Are the 110 textures more complex than the others?
Is the non-ai damage data in the packets much larger?
Is Vranac's diagnosis true because the CPU spends more time decoding the packets?
Or is it because the texture manager can't cope, but if so, why only online?

Should I post this on the bugs thread?

56RAF_phoenix

CPU Q9550 @ stock 2.83GHz
6 GB RAM
AMD 6970 2GB (6950 flashed)
2 SSDs


EDIT!!!!!! ARGHHHHHH, I've just discovered Custom Skins download is ON post installing the last Beta Patch, please ignore the above until I've tried it again!