RPM drops/goes very low after throttle in let off quickly

[rockyboist]

After throttling in quickly and I let off of it, RPM drops down to 500-600 and sometimes it gets past 500 and dies, it happens while idling and it also happens while driving, so it's a hit or miss when it is going to die, sometimes it doesnt go very low that it wont die. my RPM idle is 850-950. If I turn the AC on idle goes up by 100-150, if I try to replicate the issue with the AC on, it wont happen, since it doesnt go that low, maybe 600 being the lowest.

Which map or configuration can I check so that rpm wont drop that low during quick throttling in?

Thanks in advance.

[RHD]

try raising all the values in the Idle RPM ref table, idle settings

[rockyboist]

Ok. What's the maximum duty cycle I should be worrying about?