F4 shakes on track files.

[Gunfreak]

No I don't have the shake effect on. It only happens to my F-4 not AI aircraft.

If I have external view the F4 shakes, If I have cockpit view the cockpit is still but the outside shakes. 

Also generally the F4 breaks track more than other aircraft(like the 14 does) Including short air start mission that don't involve Jester start up etc.

I have no idea if the shaking shows up on the track for others but I'll give it a go.

round 1 rookie.trk

[Zabuzard]

This is normal behavior and happens in other aircraft as well since ED changed the track system.

The shaking comes from when the aircraft flew a different path in the original recording than it is now, when re-simulating the aircraft in the track. ED teleports the plane back to its intended position each frame, causing the aircraft to appear to shake as it is shortly moving in the "wrong direction" and then being forced back on rails by the track system. I.e. when playing a track, the plane is flying on rails regardless of where the simulation tells it to fly to. Overall, this step by ED massively improved track-reliability by ensuring all assets in the mission stay where they were, even after changing engine physics - which would have previously broken all old tracks completely, as planes suddenly crashed into the ground or mountains while more and more flight path errors accumulated over time.

There can be a lot of reasons why your aircraft now wants to fly "elsewhere". One of the most common reasons are updates. Whenever ED or we change something on the physics, the plane will behave slightly different. Another very common reason, especially with the Phantom, is weight-difference due to HB UI not being track-compatible. If you used the Jester UI, Bombing Table or anything similar in the recording, it will not replay these actions properly in the track as it cannot capture that yet. So your bombs would for example drop at a different time in the track because the track never entered data into the WRCS panel. The aircraft carried the bombs longer and hence flies differently.

[Gunfreak]

On 6/12/2024 at 3:25 PM, Zabuzard said:

This is normal behavior and happens in other aircraft as well since ED changed the track system.

The shaking comes from when the aircraft flew a different path in the original recording than it is now, when re-simulating the aircraft in the track. ED teleports the plane back to its intended position each frame, causing the aircraft to appear to shake as it is shortly moving in the "wrong direction" and then being forced back on rails by the track system. I.e. when playing a track, the plane is flying on rails regardless of where the simulation tells it to fly to. Overall, this step by ED massively improved track-reliability by ensuring all assets in the mission stay where they were, even after changing engine physics - which would have previously broken all old tracks completely, as planes suddenly crashed into the ground or mountains while more and more flight path errors accumulated over time.

There can be a lot of reasons why your aircraft now wants to fly "elsewhere". One of the most common reasons are updates. Whenever ED or we change something on the physics, the plane will behave slightly different. Another very common reason, especially with the Phantom, is weight-difference due to HB UI not being track-compatible. If you used the Jester UI, Bombing Table or anything similar in the recording, it will not replay these actions properly in the track as it cannot capture that yet. So your bombs would for example drop at a different time in the track because the track never entered data into the WRCS panel. The aircraft carried the bombs longer and hence flies differently.

The F4 is the only aircraft that shakes like that, I've tested most of the other ones, and the F4 is the only one that does so.

 

[Zabuzard]

The F4 is the only aircraft that shakes like that, I've tested most of the other ones, and the F4 is the only one that does so.
 

It happens in any aircraft in DCS whenever the FM or other things that cause the aircraft to fly differently change.

It is coincidence that you see it more on the Phantom right now, simply because it was just released and hence any patch still contains major changes on all fronts, including FM tweaks or things like fuel distribution, control surface response, trimming and the like.

If you open any track file of another aircraft, for example the F18 and change its fuel or wind in the file manually and then replay the track, it will jitter the same way.