its an out of memory error, the game doesn't have enough allocated ram (not changeable without hacky workarounds i think). as for fixes, reduce texture quality maybe, TdlQ's mod "clear texture cache" helps with memory also

• 4GB patch the .exe, so that it can use max 4GB RAM instead of 2GB ntcore if you have more than 2GB RAM.

• DXVK DirectX to Vulkan translation layer. Download DLL from GitHub -> Releases and drop it into "PAYDAY 2" folder. Steam Community Guide with some explanation (Ctrl + F, type "dxvk" without quotes).

Some of the good optimization-based mods:

ModWorkshop

mods folder

• Bandwidth Saver
• Crime.NET Cleanup
• Crime.NET Performance Improvement
• CustomFOV - Original with fix from CustomFOV - Updated description (or just use updated version, I guess).
• Depth of Field Removal
• Disable bullet smoke
• Disable Fog
• DX11 Shaders Fix SuperBLT Edition - IDK if this is even in-use for me. Lol.
• Less Aliasing
• Less Lights
• Low Violence Mode
• No Blood
• No Post Processing (Not Persist Scripts) - Because PS are run on each frame, which can cause more lag than would be fixed. Lol. OR No Post Processing + Outlines ON + No Blue Filter On Main Menu - A Persist Scripts implementation.
• No Prints
• No Weapon Verification
• No Weather
• Block Beardlib Spam
• Reduce Shotgun Spam
• Stop Wasting Updates
• The Fixes
• Unambiguous Molotovs Z-Fighting Fix
• Unambiguous Smoke Sicario smoke bomb only.
• Unambiguous Viper Gas

TdlQ's Mods

• Anticrash
• Celer
• Clear Texture Cache
• Iter
• Simple Mod Updater

mod_overrides folder - Where there are any conflicts (Main Menu -> Options -> Advanced -> Mods; click or hover to view changed files, red text indicates a conflict and each tells any mod they're conflicting with) I went with the smaller file.

• Better Looking and Optimized Mariachis
• Corrected Normal Maps
• Tailor Pack 2 Optimizations
• Performance Friendly Effects
• Performance Friendly Flame Weapons - Cash Blaster still causes noticeable lag.
• Hell's Island 'Optimization' + included optional lower-resolution blood splats.
• LemonCat Macro Pack (No Cube Maps) - Using Plants, Skies, Smoke. Roads looks odd in-game. Enemies are a nightmare as in screenshots. Didn't try Heads, HeisterHeads, or MenuBGs yet.
• Less Tacky Marshals OR Optimized Marshals
• Low Poly Enemies
• No Dirt Camera
• No Trash
• [Optimized Prop Meshes - Black Cat](
• Optimized Prop Meshes - Black Cat
• San Martin Bank 'Optimization'
• White House Optimization

Also using HoloUI for the HUD + to replace a bunch of screens with generally-better-performing versions, e.g. blank main menu, blacked-out in-between-menus non-level loading screen, etc. Also possible to use a different HUD and accomplish - at least most of - this with more mods that can be found on MWS, of course.