No, I have Flash disabled, both on Windows and on MacOS. Developer tools are a resource drain, but bearable - the browser simply gets slower after a couple of h

No, I have Flash disabled, both on Windows and on MacOS. Developer tools are a resource drain, but bearable - the browser simply gets slower after a couple of hours of use. And then much slower, like unbearably slow, even the developer edition where I don't have uBlock or any script/flash/adblocker installed.