Unable to simplify switch on enum: const(1) not found when decompiling with decompile_partial=true

[Athlaeos]

Decompiling the server gives me a lot of java OutOfMemoryErrors and so I opted to enable decompile_partial in the hopes that it would be less heavy on my device. (I already tried increasing the java heap and increasing memory through jvm args but that did not seem to help)
It fails to decompile with the following error: Unable to simplify switch on enum: const(1) not found

I believe this is due to vineflower being outdated. This issue was reported to them last year and since resolved Vineflower/vineflower#374

[UpcraftLP]

I believe this is due to vineflower being outdated. This issue was reported to them last year and since resolved

Vineflower hasnt actually released a version that contains that fix, else I would have updated it already.
Either way that's just a log error and will not stop the decompilation from completing

[Athlaeos]

I understand that, but despite that I do not get the expected HytaleServer-src.zip to choose my sources with.
It's a bit weird to me that I'm getting OutOfMemoryError: java heap errors to begin with, as I'm not running out of ram when getting these. I understand that I need to allocate more memory for this process, but I don't know where to do this. I tried doing so in gradle.properties but this did not change anything. It will never use more than 4GB. Do you know where I could do this?