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Disable interpolation and use variable FPS in GPUParticles by default #70777

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Disable interpolation and use variable FPS in GPUParticles by default #70777

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Commits on Feb 19, 2023

  1. Disable interpolation and use variable FPS in GPUParticles by default 

    This fixes various issues caused by simulating particles at a low framerate
(then interpolating the result), such as:

- Curve properties (scale, color) not being interpolated.
- Jitter at low speed scale, or when moving particles with global coordinates.
- Collision issues (tunneling, poor friction/bounce response).

From testing on two different GPUs (GeForce GTX 1080 and Radeon RX 6900 XT),
simulating particles at a lower framerate then interpolating the result had
very little performance benefit in most cases.

Instead, it's better to enable interpolation and reduce simulation rate
only when it provides a tangible performance benefit.
This may be the case with 100,000+ particles, not so much with
a few thousand particles.
    @Calinou
    Calinou committed Feb 19, 2023
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