Switching tweened to Tween produces different behaviour

[TheSpeedM]

Describe the bug

When switching from tweened to Tween, because tweened is now deprecated, the behavior doesn't seem to be the same. The difference seems to mainly be when tweening objects and updating the target multiple times per second.

Reproduction

Using the deprecated tweened

https://svelte.dev/playground/5243f9ee07484a3486d8f76eaa8762ff?version=5.16.0

Notice how the text seems to follow the mouse smoothly.

Using Tween and the set-method

https://svelte.dev/playground/bfff977c6b9441ceb2fe28583ee842ef?version=5.16.0

Now the text isn't following the mouse smoothly at all and seems to just start the transition when the movement has ended.

Using Tween and setting .target

https://svelte.dev/playground/f6a82d6b41d64573a4ae8e810642c162?version=5.16.0

This seems to produce the same result as using Tween and .set.

Logs

No response

System Info

System:
    OS: Windows 11 10.0.22631
    CPU: (12) x64 AMD Ryzen 5 5500U with Radeon Graphics
    Memory: 6.63 GB / 15.33 GB
  Binaries:
    Node: 20.18.0 - C:\Program Files\nodejs\node.EXE
    npm: 10.8.2 - C:\Program Files\nodejs\npm.CMD
    pnpm: 9.12.2 - C:\Program Files\nodejs\pnpm.CMD
    bun: 1.1.21 - ~\.bun\bin\bun.EXE
  Browsers:
    Edge: Chromium (127.0.2651.74)
    Internet Explorer: 11.0.22621.3527
  npmPackages:
    svelte: ^5.16.0 => 5.16.0

Severity

annoyance