OK so I have a friend who has been having this issue for AGES, from week 2 of the open beta and continued until recently when we upgraded from 16gb ram to 32gb. They have a laptop with 5800h and a RTX 3070 so should be well above minimum specs. In community maps with 30hz servers and games of 16 players or less with 60hz servers the game ran OK, but in the rest of the game modes and BR it was unplayable with regular rubber banding of players and dying from people who weren't there. We had tried reducing all the settings to the lowest and even redone the thermal paste to try and keep the cpu being performant. Upgrading the ram was something we thought would help as the resource monitor indicated RAM was 90% - 95% in use.
After doing this I realised that the system was reserving some of the RAM for the integrated graphics on the CPU and had been reserving 4gb for this, so in effect the system only had <12gb of RAM available.
As we had already upgraded the RAM and testing for a couple of days the system seems to be dealing with packet loss so much better, rubber banding is 99% gone, the symbol rarely appears and no longer experiences massive lag issues, LAT var + TN no longer seems unreasonable. We can even up the setting from the lowest to High and the game runs really well.
So I think maybe what was happening was the system had provisioned some of the ram to the iGPU even though it wasn't being used at that time, maybe the game was overrunning the available ram addresses and trying to write to the iGPU's memory or something along those lines (laptops tend to run windows display through this as its lower power).
Something worth trying could be for people with an iGPU and a "main" GPU (like laptops with a RTX 3060 or AMD 6700M) is to see if allocating less ram to the iGPU or disabling the iGPU helps. We have not tried this, but maybe this is a fix without buying more ram? (Especially right now!)
