In early January, complaints about problems with YouTube in Chrome with the AdBlock extension enabled appeared on the Network. The video download was slowing down, and the site itself was working much slower than usual. As it turned out, this problem goes far beyond the service.
Just a few days ago, Reddit users started reporting Youtube started slowing video buffer with adblock enabled Discussion / Reddit that watching YouTube in Chrome with the AdBlock ad blocker leads to a noticeable increase in processor load. This is followed by a general slowdown in the computer, as well as increased heating and activation of active cooling on fairly simple tasks in the case of laptops.
A little later, foreign publications conducted their tests and confirmed the existence of the problem. So, according to It’s not just you: YouTube is slowing down your PC if you have AdBlock installed by making your CPU sweat, likely as part of its draconian war on ad blockers PC Gamer launching YouTube videos in Chrome with AdBlock increased the CPU load by 17%.
The problem does not manifest itself on all computers, so it cannot be called massive yet. YouTube stated YouTube says the latest video slowdowns aren’t part of its effort against ad-blockers that it is not related to the company's efforts to detect ad blockers, but so far everything points to this.
For now, you can solve the problem by simply changing the browser. The developers of AdBlock have confirmed that they are aware of the situation and are working on its solution.