If turning hardware acceleration off fixed it, then why would you want to turn it back on? Generally, issues that are resolved by turning it on or off, don't really impact the general use of the feature, it's just kind of a toggle that sometimes resolves issues and sometimes doesn't, in my experience with it.

Well, mostly it fixed the problem, yes. I'm not an expert on this topic, but to have hardware acceleration benefits cpu performance in some tasks, doesn't it? while testing my browsing performance further I still notice a certain lag and performance decrease to what I was used to. In safari or chrome I don't have these problems, but I prefer rather not to use them anymore. I was very happy about using firefox after several years of using other browsers. For some reason there is a problem and I really want to find the cause.