Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 1070 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 431.86
Broken: version: 2.82 (sub 7), branch: master, commit date: 2020-02-12 16:20, hash: rB77d23b0bd76f
Short description of error
[Moving emitters still produce 'blocky' trails if used on moving 'Fire' or 'Fire and Smoke' emitters.]
Exact steps for others to reproduce the error
[Bake the attached .blend and observe the results.
Here's the blend-
And here's what it looks like-
Doesn't look like any of those emitters are doing terribly much with the 200 subframes all of them are set to.
And it does not look anywhere near as smooth as the 'smoke' only emitter results (the reason why T70175 was closed)-
That's the same scene uploaded above, but with all the emitters set to 'smoke' only type emitters.
[Based on the default startup or an attached .blend file (as simple as possible)]