Situation is thusly - I am mostly destocked, buying out my troops/tanks as sales continue to roll in, waiting for the PM to regenerate. Is it more beneficial for me to log in as often as possible to clear my PM, or to wait some hours for it to regenerate? How big is the difference either way?

longer away = bigger priv.

But if I am clearing it, there is nothing there to decay, right? Isn't there a balance here?

if you clear it and then you are away 24 hrs you get bigger priv than if you logged in every 6 hrs and clear it everytime.

OK, new formulas are new. It used to work like tech, where you had an asymptotic curve and keeping it clear made it replenish faster.

It's never changed. Marshal's info is wrong. Your info is wrong too, there is no curve. PM is very simple.
1. Existing PM decays 1.5% per turn.
2. PM regen is added after existing PM decays, **at the time you login, all at one go**.

Let N = number of turns you stayed logout
(PM at login) = (PM at logout)*(0.985^N) + (PM regen)*N

That is, your existing PM decays at 1.5% per turn. If you logout with any PM, part of that is going to decay. The decay happens before the PM regen for the duration you logged out is added when you next login. Obviously if your "PM at logout" is 0, then there is nothing to decay.

Conversely, if N is very huge (say 100 turns), then the first part "(PM at logout)*(0.985^N)" is going to decay to near 0, so staying logged out more isn't going to hurt you much, the additional decay is minimal. A whole strategy revolves around staying logged out for 40 hours so that you can have a maximum PM size at initial buyout without spilling over into stored turns.

To answer this, there is no difference as long as you always completely clear your PM before the next turn ticks over.

PM regen per turn:

for troops is no. acres * 3
for jets/turrets is no. acres * 2.5
for tanks is no. acres * 1

info i posted has been posted to this or q&a, can't remember by whom.

Marshall, in most of your posts you pass on undigested stuff that you picked up from don't know who or don't know where.

If you were to set out the source of your information when you post it would be helpful.

i read that pm regen year or 2 ago and not interested to search it.

So you post something like

"Longer away= bigger private

or so I read a year or two ago when not interested enough to check."

marshal sometimes uses the internet to post here.