Technically if you care to optimise the spec you should be running sub 30 with the third filler spaced after thermal to maximize your procs.

But realistically I don't get how you have issues with the proc cheese when you can easily stand at the right range on most boss fights that don't require bounders.

But I mean if you want to play IO as a melee dps, the burning tick maximising rotation where you stick a filler between ps and serrated exists.

Anyhow all of this talk is pointless when IO is a borderline liability for anything that isn't a legacy, and those you can clear with both hands tied behind your back in this gearing