Crashing during team play (several guild players affected)

Guildies and I are encountering issues crashing when entering the same maps (seems to happen most with blight maps and delirium maps). Instance loads fine to begin with but if you die, you cannot re-enter as it crashes during loading.

Happened in various guildie hideouts so not confined to one person. Possibly too many mobs to generate would be my guess as normal maps dont seem to be affected as much.

Any help would be much appreciated. Please let me know if you need anymore info.

reproduction steps:
1. Happens in a team of minimum 2 (we've had three players as well)
2. Load delirium or blight map
3. Die during heavy combat
4. attempt to re-enter portal
5. Crash

Troubleshooting attempts
Tried deleting the DailyDealCache, MOTDCache and ShopImages files
Changed from Vulkan back to DirectX
lowered graphics
Doesnt seem to matter if the portal is away from the action or not

Not sure if this helps but last known Windows event viewer shows (there were several):

1.

Faulting application name: PathOfExile_x64.exe, version: 0.0.0.0, time stamp: 0x603c5a95
Faulting module name: PathOfExile_x64.exe, version: 0.0.0.0, time stamp: 0x603c5a95
Exception code: 0xc0000005
Fault offset: 0x0000000000deb29e
Faulting process id: 0x6a34
Faulting application start time: 0x01d7174ad6d8e4f8
Faulting application path: C:\Program Files (x86)\Grinding Gear Games\Path of Exile\PathOfExile_x64.exe
Faulting module path: C:\Program Files (x86)\Grinding Gear Games\Path of Exile\PathOfExile_x64.exe
Report Id: 626d0d9d-cbb8-4ae1-bab3-ef89bcfb86b0
Faulting package full name:
Faulting package-relative application ID: