Last night, after trying some different settings, I reset textures from 256 back up to 512. Strange, but the rythmic stuttering seemed to stop. I stil got random or intermittent stutters every 10 to 20 secs.
Then I went to a base with other people around. Got thoroughly hosed on screen. Like trying to fly in a slow-motion strobe light sequence of a B-flick movie. Delay and lag and visual head ache. Squadmate was exactly the same problem. This was over TT with only a half dozen in the air and maybe 2 dozen on the ground.
Went in and dropped all terrain effects, all skins, turned down graphic detail, anything and everything that might ease the data transfer load. Then spent 10 minutes to see if it would improve and still hosed.
It's not longer cyclic stuttering, it's stuttering and freezing and lagging with any and every input.
Need real help.