You could probably fix this with the formula device, I think the scaling formula’s for all DSP devices were posted here a while ago (can’t find them though, maybe someone can help?) - with these and a bit of maths you could set your own scaling curve…
Edit: Here is the post I was referring to:https://forum.renoise.com/t/kbd-to-filter-play-the-filter-resoance-not-quit-there-yet/44409 - Now for some maths 
Edit2: You could also stick the filters in a doofer and adjust the scaling that way, like so:
Click to view contents
true
true
Init
Bundled Content
true
1.0
Device only
29.9999962
Device only
Cutoff
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2
0.0
1.0
Exp Slow
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3
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1.0
Linear
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Macro 3
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Macro 4
50
Device only
Macro 5
50
Device only
Macro 6
50
Device only
Macro 7
50
Device only
Macro 8
2
false
Init
Bundled Content
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true
true
Init
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true
1.0
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2x
Biquad
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0.0
Device only
0.00393676758
Device only
true
18