I'm running BetterMC on 1.16.5 with Adoptium Java 17. The application becomes unresponsive. I've waited over 30 minutes at times and it just doesn't want to seem to load. I've tried everything for this. I have my JVM args set to 

--add-exports=java.base/sun.security.util=ALL-UNNAMED --add-opens=java.base/java.util.jar=ALL-UNNAMED -Xmx16G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M

And delete fml.toml before launching. 
Nothing seems to have worked at all so I've resorted to posting here. This is my debug log 

https://gist.githubusercontent.com/callavici/89ac3e3bc78f5fe52ae76629295e5726/raw/642100c3f06c99e58a924dc1265493f01c345b58/debug.log

Oh shoot, I missed the version support on the EAQ, if you could close this thread for me that'd be great, I can't delete it myself. My apologies for not being thorough.