Operating system: Mac Os Mojave 10.14.6 (18G95) and Windows 10 (Last update)
Graphics card: AMD Radeon R9 M295X 4 Go & Nvidia GTX 1070
Short description of error
There is a problem of particle rendering if we use the Time remapping function which makes it possible to make a film slower by multiplying the number of images of an animation. The particle animation is not continuous, some disappear and then reappear creating a jerky effect.
The problem does not appear when launching the animation directly in the software but only by doing a rendering calculation whether it is in film or frame-by-frame mode or movie (with Cycle or Eevee rendering)
Exact steps for others to reproduce the error
If I leave the time remapping by default (old 100, new 100) there is no problem.
If I change the time remapping to have a movie with 4 times more image (old 25, new 100), the problem appears: the particle animation is not continuous, some disappear and then reappear creating a jerky effect.