Metal compatible graphics card
Yup, makes sense. This was about when the UE still allowed to run below Shader Model 5.0 which your video card does not support.
As to why it crashes. For starters, you’re running a cutting edge software on very dated and unsupported hardware.
Why is it crashing now and not before: you recently updated video card driver (unlikely, since no new drivers are available, surely) or an OS change happened - an update was applied behind your back - a more likely scenario.
I seriously doubt there’s much you can do. There’s next to none technical support for current engine version crashes, getting something that outdated to work is rather unlikely.