Handle Refractive aliasing in Pathtracer

Hi everyone,

I am working on glass in conjunction with notch’s pathtracer. The problem I have is this evil aliasing in my animation that I cannot get rid of. Tried all sorts of settings (Antialiasing, Denoising).
You can see the problem here:
And here:
Seems like the only cure is the brute-force-lots-of-passes (above 400?) but I am trying to stay below 200 passes to keep my rendering times moderate.
Is there any way to address this issue?

Here’s a sample file:
AliasingIssueWithPathtracerAndGlass.dfx (3.4 MB)

Thanks in advance and best,