"Minecraft crashes on launch with 'EXCEPTION_ACCESS_VIOLATION'"
-Xmx4G -Xms2G -XX:+UseG1GC -Dsun.rmi.dgc.server.gcInterval=2147483646 -XX:+UnlockExperimentalVMOptions -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M opticraft minecraft windows 7 full
If you prefer the Java Edition, the official Minecraft Download Page still offers a specific "Download for Windows 7/8" launcher that is more stable for older OS versions. opticraft minecraft windows 7 full
You are not alone. A small but dedicated community maintains and supports OptiCraft: opticraft minecraft windows 7 full
Ensure you have Service Pack 1 installed, along with the latest security updates from Microsoft.