Update: It looks like previous crashes might be a slightly different, although it still looks like a memory issue:
Evolution [version: Unity 2017.4.0f1 (b5bd171ee9ba)] UnityPlayer.dll caused an Access Violation (0xc0000005)
in module UnityPlayer.dll at 0023:5f721f4d. Error occurred at 2018-08-03_041922.
C:\Users\[installation location redacted]
37% memory in use.
0 MB physical memory [0 MB free].
0 MB paging file [0 MB free].
0 MB user address space [3136 MB free].
Read from location 0d74e0a0 caused an access violation.