OpenJDK Platform Binary is a Java environment that is required for running Java-based applications like Minecraft and some other apps. OpenJDK is a free, open-source implementation of the Java SE Platform Edition from Sun Microsystems. It is a critical part of the Java code execution and provides a suitable runtime environment for developing Java applications. The OpenJDK platform binary contains all the necessary classes to run a program and provides important bug fixes and updates. It guarantees security and performance, making it beneficial to compile and execute classes using the OpenJDK platform.

The OpenJDK platform binary can cause high CPU usage, which can occur for various reasons. An outdated graphics driver is a notable cause of the OpenJDK platform binary high CPU. When the graphics driver is outdated, it cant run at full capacity, resulting in issues with other system components. The integrated graphics processor on the CPU handling all the graphics tasks of the OpenJDK Platform binary process instead of the dedicated GPU can also cause the issue.

To fix the OpenJDK platform binary high CPU issue, you can update your graphics driver. You can also try disabling Integrated Graphics from BIOS. If the above solutions are not working, you can try performing a system restore. Before trying any advanced troubleshooting, you can free up enough disk space on your computer, turn off background apps running on your PC, and restart your PC in Safe Mode.