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How critical is CG on trad heli? How well does the autopilot handle off balance CG?

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How well does the ardupilot handle off CG on trad heli?

For instance, if I wanted to use a larger than normal battery or a cam gimbal or both and it moves the CG forward some of the main rotor shaft how will the auto pilot be impacted? Will stability modes drift more or require more cyclic trim or just holding cyclic back? Will the autopilot just compensate on its own and the heli will more or less fly the same with maybe slightly different handling?

I have some larger batteries that I got for longer flight times when my heli used a beastx controller. With that it was not a very noticeable difference other maybe having to hold a little more back pressure on the pitch stick some times. I was pretty new to flying with a probably sorta poorly tuned heli when I tried it though. Just looking for any gotchas or good info on how this impacts the autopilot since I am converting this heli to arudpilot. I say this just to convey the heli was perfectly flyable with the amount of off CG that it has. Its just not balanced at the rotor shaft with this configuration but would be in the envelope if these RC heli had CG charts.

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