Please contact your SOLIDWORKS Value Added Reseller (VAR) and ask your VAR to submit your files (if you are willing to share them) to SOLIDWORKS Technical Support for investigation. This may be related to a known issue that the SOLIDWORKS Simulation R&D team is already working on.
From my VAR:
This is a critical case open with SOLIDWORKS right now that we were not aware of.
Being that this is a critical issue, I expect that it will be corrected quickly.
In the meantime, it is recommended that you revert to 2016 SP3 or simply multiply your results by the conversion factor of 4184.
For example, your heat power of 11.66 now shows a heat power of 0.002787.
- 0.002787*4184 = 11.66W