Thanks for the report. I'll try to fix this in the next build released.
This should be fixed in the new v4.27-2040 Beta released a while ago.
Please let me know if it's OK now.
The slow startup is mostly caused by scanning of additional GPU I2C devices (like the VRM sensors).
I think you might reduce the time by disabling the GPU I2C bus #7. Launch HWiNFO, press the Settings button, select the "SMBus / I2C" tab and in the "GPU I2C Bus Exclusion" part tick the box belonging to #7 (last one). That will disable scanning of this bus and might improve HWiNFO startup time.
As for the additional temperatures (Temp2 and Temp5), these seem to be bogus values coming from not connected sensor inputs. Moreover, they should belong to a different sensor (not the GPU VRM), but because they appear sporadically, they are not properly ordered.
In Sensors / Settings, go to the "Layout" tab and press the "Restore Original Order". That should order them correctly.
Thanks for the feedback.
You might also completely remove those temperatures, so they don't disturb.