Code squeeze by inlining some initialiser lists
Right-size some fields, remove a perf counter
Don't replicate render counters across scenes
main loop perf counters don't make a lot of sense, don't handle interrupt time well
Redraw for mode changes
Make sure the linker knows, no exceptions, no RTTI
Sketch in a packet for ECU-derived data
Less perf gunk in the dashboard codebase