Supply Recycler
I've seen it happen in heavily modded playthroughs, I should be able to fix it by turning the stat changes from hullmod to a hidden skill but haven't gone around in doing it yet.
If you have an unexpected boost of Ss mod programming motivation that would be the one to use it on

. Because I found that every time the supply number jumps (about every two seconds) I also have a small lag spike making the game choppy. Removing all Supply Recyclers from the fleet also removed the lag. I don't know how you implemented the "supply saving" and I am quite sure that it isn't your mod alone, but rather an interactions with other mods which react to ship stat changes. But getting rid of that would be nice.
[disable certain hullmods?]
Should be possible to add but not sure when will I add them been busy playing other games right now most my mods are in maintenance mode meaning I'll fix bugs etc but will not add new features for the time being. Unless I gain sudden boost of motivation to just do it, until then glad you like the mod.
Understandable. If it works by editing hull_mods.csv as Stukov81 wrote, I'm fine. Sure it would be nice to have a lunalib option for it (mainly because it would make the changes mod-update-safe), but editing a file once isn't something to complain about. Assuming I have none of these hull mods installed, removing them from the CSV will mostly likely still break my savegame though, right?
Graviton Attunement Drive
This is def one of the mods I really like having, you can modify the stats of the hullmod if you feel like its too strong. If you have lunalib you'll find in the lunalib setting, in the logistics tab iirc. You can lower the burn level increase per ship size and even modify the supplies use and sensor profile debuffs.
About editing costs in hull_mod.csv: is there a value I can enter for
cost_frigate so that the game will tell me "can't be installed on a frigate"?
Sorry, if what I said sounded too critical. It's complaining on a high level

. I'm glad there are people like you donating their time to make a game more (re)playable.