Lesser percent part fans to fix warping/shrinking with PLA

Is there any problem with trying lesser percent part fans to fix warping/shrinking with PLA? Like for example minimum 70% maximum 85% with layer times 100 and 4 instead of 100%?

I tried this with %20 adaptive cubic infill and there were holes in the infill walls I reverted back to 100% and there is no problem so it seems like it’s not a good idea.

A common consensus is to fully turn off the Aux fan under the filament profile and that fixes it for most people.

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