Hey All, I'm an old user of Firefox since the Netscape times. For the last few weeks, Firefox become so slow on all my computers. I have 2GBps internet connection and * a fast PC (i9 11900/64GB/NVMe SSD RAID/3080Ti, Win 11 for Workstations, wired Ethernet@2.5GBps) * a once-it-was-fast notebook (i7 8750H+32GB+NVMe SSD, 1660 GTX, Win 11 Pro, wifi 802.11ax >800MBps) * and a relatively slow notebook (Ryzen 3 2300 or the like, 4GB, Win 10 x64, wifi 802.11n). * All of them have the latest op system, drivers, firmware, etc. A common scenario: * I try to open a webpage in Firefox, nothing happens; * I switch to Chrome (or Opera, Edge), open the same page, it opens in 1-2s; * I switch back to Firefox that is still at the middle of loading the page; I can play it on all the 3 equipment, the result is the same: Ff is much slower than any other browser on my PCs. There is one common app that is present on all the machines: my paid-for security package that I won't turn off. If Firefox has any problem with it (that Chrome, Opera and Edge don't have), Ff must go (with my regrets). I tried to turn off all the plugins but it didn't help. I don't think it's plugin related as Ff is still so slow w/o any plugin enabled. If you could give me a hint where to look for the cause that would be great. Thanks.