Hello LSPDFR community!
I've been keeping an eye on this thread for some time now, but none of the mentioned modifications to the values in the gameconfig.xml file would work in my situation. I have exactly 177 replaced vehicles and 15 addon vehicles (yes, I know that's a lot, every civilian and emergency vehicle replaced but no motocycles, would like to in the future but I can't ATM)! So after a lot of testing I was able to get the game stable with the following changes to the gameconfig.xml file:
<PoolName>FragmentStore</PoolName>
<PoolSize value="20000"/>
<PoolName>Vehicles</PoolName>
<PoolSize value="1500"/>
<PoolName>VehicleStreamRequest</PoolName>
<PoolSize value="500"/>
<PoolName>VehicleStreamRender</PoolName>
<PoolSize value="500"/>
<PoolName>VehicleStruct</PoolName>
<PoolSize value="600"/>
<PoolName>HandlingData</PoolName>
<PoolSize value="1900"/>
<PedsForVehicles_Base value="500"/>
<PedsForVehicles value="500"/>
<VehicleMemoryMultiplier value="900"/>
<VehicleUpperLimit_Base value="500"/>
<VehicleUpperLimit value="500"/>
<MaxVehicleModelInfos value="3900"/>
<MaxExtraVehicleModelInfos value="2400"/>
<PoolName>OcclusionPortalInfo</PoolName>
<PoolSize value="500"/>
But now I'm no longer able to replace or add more vehicles at all, and no matter how much I increase these values, the game becomes totally unstable, crashing in about 10 minutes of gameplay. But I'm no expert at this, I just looked at other people's gameconfig.xml files to figure out what values to change, so I could be messing it up when I tried to increase all these values at once where it could be that some values are already maxed out or whatever, who knows. I just hope this helps others get more vehicle mods into the game! :)