BTDF maxes out environment variable block on Windows Server 2019

[mzCluster]

Hi,
We are encountering build failures when attempting to generate a BizTalk app MSI using BTDF.
BTDF starts raising errors via MS build due to it failing the ICE validation checks.
I have been able to narrow down the issue with it being related to hitting the memory limit of the PEM block in Windows.
As a test we removed some env. variables and reran BTDF where it started working fine but when reintroducing the additional variables, it started failing again.
Currently as a workaround/stop gap we have supressed the validation check but of course this is not a good idea or practice in the long run.

Does anyone know how we could fix this issue around hitting the env. variable memory limit?

Thanks