Do you know if this fix also applies to the 5300m?
Hopefully the fix applies to both models but I'm not holding my breath.
I can't help but think they didn't want to bother because "new hardware is just around the corner" for longer than they expected.
In the real world, my 2017 MBP performed better just because it didn't throttle. Ridiculous.
As for the supposed 'Low power mode' in Monterey - I'm not convinced that isn't just turning on throttling manually.
CPU is normal - prevents CPU temps going above 100C.
The issue is VRMs which have no cooling. And no public sensors.
The fix is to add thermal pads to your VRM chips to dissipate the heat to back plate. Entirely solves all throttling issues. Cleaning fans should help too.
I think it’s possible your expectations are a bit optimistic here.