Pre/Input Filter bit conversion

Hi forum,
the Pre/Input Filter of the Channel Settings window converts any signal to 32 bit when turned on.
Can I change that?
Why, for example, the EQ right next to it doesn’t do that?
I’ve checked with a “bitscope” named Bitter by Stillwell Audio (free).
Thanks to anybody who know.

Changing the project’s bit depth doesn’t help.

Not an expert but internal processing/plugins are done at 32 bit no?