Question My CPU goes to 0.40 ghz while playing any game even bluestacks emulator

Mar 30, 2022
my laptop is an Acer nitro 5 an15-43 model.I usually play without a problem.I clean my lap with the help of a computer service guy. Now again I faced that lag issue and cleaned by giving to the service provider 0.40 GHz while playing any games. cleaned and applied cooling components too but now also there is issue.MY heat sink(pipe) is fully dried too..but the technician said thats not much a problem because before cleaning i run low games smoothly.I dont know what to do..please help..there is no heat felling heat but my fans are running 4000 rpm almost always now
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