Infantry Survivability

[Muhail2]

I've been playing SPMBT for half a year already and it realy starts to bug me that infantry seems to survive many anti-infantry weapons way too good.
A simple example:
A T-95A from Cold War 2020 mod moving at 4 km/h fires 5 HE-FRAG from his 152-mm cannon at chechen scout section, hiding in forest merely 250 metres away. The only casualty he inflicts is the one made with PKT MMG.
Oh Lord, this is almost howitzer shells landing (thanks to FCS and stabilizators and rangefinders and what not...) directly at the infantry positions. I just don't get how it couldn't cause a few wounded from heavy concussion at least. :chin:
I remember reading that tanks, placed as artillery pieces on the hills surrounding Grozny, provided very efficient and useful fire support during the second assault of the city. And that were T-72 with shitty FCS and 125-mm HE shells, firing those from 1,5 - 2 km range! Don't even try this in SPMBT. It seems that main gun fire is effective in inflicting casualies only when at 50 to 0 metre ranges...
The same applies to almost any fragmentary-based weapons. Especially AGLs and autocannons seems strangely unable to kill and wound even infantry advancing through open field.
Well, I can talk on this topic almost for hours, analyzing, comparing and swearing. But the point of the thread is: What can be done to solve the issue with uneffective anti-infantry fire? Tweaking in-game settings proved to be wrong - as the problem mainly lies in low accuracy of all weapons against infantry (while accuracy against vehicles is ok). Are there some configurable values in game files? Is it possible to modify certain OOB's parameters to solve problem without causing side-effects? Or are such changes only possible by developers?