So ok Let's talk about payday 2 logic on how cop's shoot a bit.

By default, most of the enemies won't even use full auto mode and fully focus on burst mode.
Even worse the further from the enemy, the less likely enemy shoot you.

With a coding from Streamlined Heisting and some knowledge from Hoppip how it's work.
Cops will now use full auto mode instead of burst mode.

Unlike Streamlined Heisting This mod does not touch most cops weapon damage and try to keep original spawn rate.

However, I also added some features and change some of its valve from Streamlined Heisting That help improve the spawn group and some addon features.
-NPC can now melee each other.
-Almost instant aim and focus on every difficuity.
-cops react more aggressively when appropriate.
-Group spawning now always spawns the entire group at once.

Showcase:

Full Gameplay:

install in Mods folder.

I also suggesting you to get Reduced I-Frame Damage too since the vanilla grace period won't save you much from full auto cops especially with multiple cops aim at you.

And if for some peoples want to play this mod on multiplayer cilent should have this mod too otherwise you gonna have to download another addon that I made for multiplayer. (note:It's have a chance to crash for clients if host goes into costody as I tested)