Something has changed recently that causes Firefox to slow to a crawl when this is enabled. CPU and memory utilization look normal. Even local web pages that normally load in milliseconds now take seconds to load, and often as much as 30 seconds for a normal page load. This is badly broken! Disabled.
That's not good! Just to confirm you are running the latest 3.0.25 version? If not, please try upgrading. If so, can you reach out at support.malwarebytes.com please and we can help resolve from there.
