I have similar problem with my EQ14 with latest bios TWEQF003.
How to reproduce on Linux:
cd /tmp/
wget 'https://download.blender.org/peach/bigbuckbunny_movies/big_buck_bunny_1080p_h264.mov'
ffmpeg -benchmark -i big_buck_bunny_1080p_h264.mov -c:v libx264 -preset veryslow -crf 22 -an big_buck_bunny_1080p_h264.mp4
rm big_buck_bunny_1080p_h264.m*
Is this expected behavior? I’m using it for Plex and have to limit CPU usage of it.

According monitoring CPU doesn’t reach critical temperature as well as FAN RPM are 2500 of 4000, I’ve tried to increase PWM slope of FAN to make base speed more aggressive, but this isn’t helping.
Looks like this is a hardware bug with CPU or PSU.