Daz. More great info thanks. So if Vsync isn't off we know that's not the problem for you.
Regarding not all UFOs jerking at once, the Vsync "line" is only at one place on the screen and it often moves around so it will only affect a few UFOs, and mainly the faster ones as you have correctly identified.
Regarding them not all jerking at once, I wonder if it's just the faster onces and the jerking is a TFT issue this time. I'm sure getting confused now for sure, but thanks for testing.
Oh yeah the demos are DirectX driver, that's why I've got the lag fix in there because it's a DirectX only issue. I daren't make my game OpenGL only as LOTS of PCs won't run it properly.
Regarding not all UFOs jerking at once, the Vsync "line" is only at one place on the screen and it often moves around so it will only affect a few UFOs, and mainly the faster ones as you have correctly identified.
Regarding them not all jerking at once, I wonder if it's just the faster onces and the jerking is a TFT issue this time. I'm sure getting confused now for sure, but thanks for testing.
Oh yeah the demos are DirectX driver, that's why I've got the lag fix in there because it's a DirectX only issue. I daren't make my game OpenGL only as LOTS of PCs won't run it properly.