Clearly, there was some faulty thermal throttling going on. Also, the fan started to blow quite a bit, and it took several minutes before it settled down again, even though core temperatures were below 40 degrees. And as far as Youtube videos are concerned, they are still running fine even in full-HD resolution in this throttled down state.Ī first look revealed that the slowdown is caused by all processor cores running on a meager 1.1 GHz clock rate. This is because for a minute or so, the notebook performs very well and only throttles down after that.
When using the notebook for everyday activities such as word processing on the very low end of the performance scale, or watching a Youtube video, one doesn’t notice this at all. Even 10 year old notebooks are faster! So I had a closer look what was going on and how this could be fixed. Instead of reaching transcoding times of around 7 minutes for my sample video, and a speedup in the order of 6x, the speed-up indicator suddenly started going backwards and reaching 3,5x speed levels, which flatly doubled the transcoding time. I’ve ended the previous post on the topic hinting that I saw a significant performance drop on that new Lenovo L14 Gen 2 notebook during ffmpeg encoding after around 60 seconds.
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