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Some Sites are lagging

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i have been working for several days on the same website that I'm now, and it starts lagging and turning the screen to black until I close the browser completely idk why is this happening while it works on other browsers perfectly. please fix this

i have been working for several days on the same website that I'm now, and it starts lagging and turning the screen to black until I close the browser completely idk why is this happening while it works on other browsers perfectly. please fix this

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Some sites are lagging... Please fix.... Fix what??? Help us help you by providing proof of the issue.

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