Here is some tips:

The static system spawn zombie groups always at the same places (police stations, hospitals, small military camps...)
The dynamic system populate randomly the big areas (towns, big military areas, countryside...)

If you want a lot of zombies, you should first make sure that the players are always focused by the dynamic system (when not the dynamic system make only spawn one zeds when it should spawn a group of zeds). For that set the "59" value to 100 in the json.

Then you can increase the "3" (for dynamic system) and "4" (for the static system) values in the json to increase the number of zeds spawn by these two systems (it is a % applied to default quantities).

Remember that the dynamic system needs that the player move to populate an area, so when you make your tests, move in a city at least 5min to see how many zombies spawn.
Another thing about dynamic system, there is a max number of zeds per area (to avoid infinite waves) you can increase them if you need with the last column of the DynamicSpawnZones.c

Last things, if you use Chernarus map, the dynamic system spawn less zombies on the coast than in the north west corner of the map. If you want to disable this feature set the "6" to 0 (be careful the default value correspond to the "north west" corner and will be apply on all the map).

To sum up if you want MAX of zeds:
in the json :
--- "3" value to 200 (double dynamic)
--- "4" value to 200 (double static)
--- "6" value to 0 (disable coast factor)
--- "59" value to 100 (player alway focused)
in the DynamicSpawnZones.c
--- all last column values to 100 (very hight max nbr of zeds for each zone)

(don't forget to move 5min in a city to make to tests)

well i like just playing sniper when im bored so i think ill have to mix it with vanilla so i have more static zombies at varying ranges, at the moment if i drive into NWAF ill get 50 zombies who only want to stand around my car so i can just shoot them standing still... not sure what setting might fix that?

probably worth mentioning i am using the configurable zombies mod too, ive just changed all the numbers to your suggestion so ill let you know how it goes! i still need to configure the zombies more though, they seem far slower and stupider than vanilla and since my server is just a very small PVE hardcore survival with 2 or so players at the best of times im trying to focus on more zombies, wolves and bears.

(omg the MoreWolves mod is insane it makes life so much harder! i had to go delete a bunch of spawns too close to the coastal spawn because without a rifle you will be dead in no time)

Originally posted by Arkaon Deathsword:

well i like just playing sniper when im bored so i think ill have to mix it with vanilla so i have more static zombies at varying ranges, at the moment if i drive into NWAF ill get 50 zombies who only want to stand around my car so i can just shoot them standing still... not sure what setting might fix that?

If you like sniping and playing chernarus map,you can go in the castles towers. When you're in teh castle the dynamic system make a couple of zeds spawning at 800m (take your time to find them like spnipers do).

To be less safe on the car roof, with my other PvZmoD Customisable Zombies zombies are able to hit player on little obstacle.
Note that this mod make the "hunters" always running and as they spawn for castel sniping training, things begin to become a quite interesting ;-)

Originally posted by Arkaon Deathsword:

probably worth mentioning i am using the configurable zombies mod too, ive just changed all the numbers to your suggestion so ill let you know how it goes! i still need to configure the zombies more though, they seem far slower and stupider than vanilla and since my server is just a very small PVE hardcore survival with 2 or so players at the best of times im trying to focus on more zombies, wolves and bears.

(omg the MoreWolves mod is insane it makes life so much harder! i had to go delete a bunch of spawns too close to the coastal spawn because without a rifle you will be dead in no time)

The custom zeds mod make zombies hear less far the fire shots and because some of them are lower (but stronger) the global speed of zeds is lower that vanilla.
But the spawn system allow to spawn lot of zeds so the difficulty is "different" but still here.
No need to mention that with unlimited stamina zeds become useless.

Originally posted by Liven:

Originally posted by Arkaon Deathsword:

well i like just playing sniper when im bored so i think ill have to mix it with vanilla so i have more static zombies at varying ranges, at the moment if i drive into NWAF ill get 50 zombies who only want to stand around my car so i can just shoot them standing still... not sure what setting might fix that?

If you like sniping and playing chernarus map,you can go in the castles towers. When you're in teh castle the dynamic system make a couple of zeds spawning at 800m (take your time to find them like spnipers do).

To be less safe on the car roof, with my other PvZmoD Customisable Zombies zombies are able to hit player on little obstacle.
Note that this mod make the "hunters" always running and as they spawn for castel sniping training, things begin to become a quite interesting ;-)

Aah ok, yes i have the zombies hitting in obstacles and radiator damage which i like! it overrides no damage mod for cars for lag spikes that cause a car write off, i have ♥♥♥♥ internet so.

Originally posted by Liven:

Originally posted by Arkaon Deathsword:

probably worth mentioning i am using the configurable zombies mod too, ive just changed all the numbers to your suggestion so ill let you know how it goes! i still need to configure the zombies more though, they seem far slower and stupider than vanilla and since my server is just a very small PVE hardcore survival with 2 or so players at the best of times im trying to focus on more zombies, wolves and bears.

(omg the MoreWolves mod is insane it makes life so much harder! i had to go delete a bunch of spawns too close to the coastal spawn because without a rifle you will be dead in no time)

The custom zeds mod make zombies hear less far the fire shots and because some of them are lower (but stronger) the global speed of zeds is lower that vanilla.
But the spawn system allow to spawn lot of zeds so the difficulty is "different" but still here.
No need to mention that with unlimited stamina zeds become useless.

I have now modded the movement speed to be what i think realistic with the classes, fat are slow military or normals etc are fast, old and skinny slow like fat zeds but most are slower at night due to being undead with ♥♥♥♥ vision except soldiers still sprint at night

I have a realistic survival setup so no unlim stamina here everything is trying to kill you just not people lol id love for it to grow eventually, i want the PVE so hard people want to help eachother, toxic zone and medical attention upgraded radiation zone i put over 80% of NWAF really increases the challenge BUT then having a car has always been OP when you can run anything over so the damage idea is great! I just wish they wouldnt stay stuck aggro on a car not running makes it a bit easy to just kill all the zeds that your car brought with it easy as

im getting the hang of it, its the time delay it takes for all the statics to spawn i think that has been making it difficult, i went from 1 zombie per square meter to bugger all by jumping setting in doubles but sometimes takes 5 mins for them all to gather up so ive been using NumPad 5 like instructed but im curious what do the number columns represent?
Example: in berezino, Zombies 79 (77/2==77-0-0-0-0)
sometimes theres smaller numbers not just zeros

now i have 86/36==72-11-3-0 guessing the 36 is dead zeds i just killed a heap

These numbers help to see what do the zombies on the server.
before your nbrs you have the total number of zombies
1st (86) : number of zombies alive
2nd (36) : number of dead zombies
3rd (72) : number of calm zombies (included dead bodies)
4th (11) :number of disturbed zombies (they hear player but don't really aggro)
5th (3) : number of alerted zombies
6th (0) : number of zombies chasing players (they have aggro a player)
7th (0) : number of zombie fighting players or animals (this nbr miss in you last post).

These values are interesting to check when you have server performance problem because more a zed is active more he is ressource consuming. Checking these number help to know if the perf problem comes from zeds or not.

cheers for the info :)