It appears that there may be a rendering issue with your map overlays, particularly in Act 4 with the Maggots. When there are maggots present, large black boxes seem to appear in their place.
Some basic hardware info about me:
H/W path Device Class Description
===================================================
system Computer
/0 bus Motherboard
/0/0 memory 16GiB System memory
/0/1 processor AMD Ryzen 5 2600 Six-Core Processor
/0/100 bridge Family 17h (Models 00h-0fh) Root Complex
/0/100/0.2 generic Family 17h (Models 00h-0fh) I/O Memory M
/0/100/1.3 bridge Family 17h (Models 00h-0fh) PCIe GPP Bri
/0/100/1.3/0 bus Advanced Micro Devices, Inc. [AMD]
/0/100/1.3/0.1 storage 400 Series Chipset SATA Controller
/0/100/1.3/0.2 bridge 400 Series Chipset PCIe Bridge
/0/100/1.3/0.2/0 bridge 400 Series Chipset PCIe Port
/0/100/1.3/0.2/0/0 enp3s0 network I211 Gigabit Network Connection
/0/100/1.3/0.2/1 bridge 400 Series Chipset PCIe Port
/0/100/1.3/0.2/1/0 wlp4s0 network RTL8822BE 802.11a/b/g/n/ac WiFi adapter
/0/100/1.3/0.2/2 bridge 400 Series Chipset PCIe Port
/0/100/1.3/0.2/3 bridge 400 Series Chipset PCIe Port
/0/100/1.3/0.2/4 bridge 400 Series Chipset PCIe Port
/0/100/3.1 bridge Family 17h (Models 00h-0fh) PCIe GPP Bri
/0/100/3.1/0 display TU106 [GeForce RTX 2070]
/0/100/3.1/0.1 multimedia TU106 High Definition Audio Controller
/0/100/3.1/0.2 bus TU106 USB 3.1 Host Controller
/0/100/3.1/0.3 bus TU106 USB Type-C UCSI Controller
/0/100/7.1 bridge Family 17h (Models 00h-0fh) Internal PCI
/0/100/7.1/0 generic Zeppelin/Raven/Raven2 PCIe Dummy Functio
/0/100/7.1/0.2 generic Family 17h (Models 00h-0fh) Platform Sec
/0/100/7.1/0.3 bus Zeppelin USB 3.0 xHCI Compliant Host Con
/0/100/8.1 bridge Family 17h (Models 00h-0fh) Internal PCI
/0/100/8.1/0 generic Zeppelin/Renoir PCIe Dummy Function
/0/100/8.1/0.2 storage FCH SATA Controller [AHCI mode]
/0/100/8.1/0.3 multimedia Family 17h (Models 00h-0fh) HD Audio Con
/0/100/14 bus FCH SMBus Controller
Initially, I believed the issue to be caused by my system since I am running on Linux, but upon further investigation, it appears that this is not the case. I have attempted to resolve the issue by adjusting various settings such as changing to all low or very high for the graphics presets, trying windowed mode, and experimenting with different resolutions. None of this has seemed to fix the issue or even mitigate it.
I would provide links but apparently that’s a no no here. Why provide me with a link dongle then?? Anyway, there’s your bug. Happy hunting.