The version is notoriously fragile, but not irreparable. In most cases, disabling Hyper-V and performing a clean boot installation resolves the engine failures. If lag persists, downgrading to the Nougat 32-bit instance or rolling back to v5.8.200 are the ultimate workarounds.
Let’s keep it real. Not everything was solved in 5.9.300. Msi App Player 5.9.300 Fix
However, based on general knowledge and common issues with app players, here are some potential fixes or features that might be included in the "MSI App Player 5.9.300 Fix": The version is notoriously fragile, but not irreparable