Roon convolution - any max file size for zip?

I try to make my convolution work in roon.
I generated crossover with acourate and it’s work great.
My filters in zip have 1.5m.

When I do room correction, my zip files contains .cfg and bass.wav, mids.wav and highs.wav (I am in 3 way active crossover).
The zip have 3mb and when I engage it, no sound.

If i replace the bass.wav with the bass.wav (from the crossover (no room correction with it) the zip go under 3mb and it’s work.

That filter 3 mb work into j-river but not in roon.
I am using the same .cfg, the same wav filters.

Any idea ?