Flightlessmango has released MangoHud v0.8.3-rc2, a recent release candidate for its popular open-source Linux gaming overlay. This update primarily focuses on stability and compatibility fixes. Key improvements include enhanced AMDGPU metric reporting, resolving issues where CPU power was sometimes unavailable and correcting 32-bit GPU metrics. The update also addresses a critical Vulkan swapchain image handling problem by indexing per-image state by the image index, improving rendering accuracy. Further fixes in v0.8.3-rc2 enhance GLX compatibility, preventing crashes when setting vsync to -1 in Zink and resolving corrupted font textures in some games. Wayland support sees a missing HAVE_WAYLAND check added for EGL. Several crash scenarios, such as race conditions with presets, double-free issues, and render thread locking without a display, have also been resolved, contributing to overall improved reliability for Linux gamers.