problem with the smooth operation of Firefox

Can you let me know when Firefox will launch smoothly after an iOS update? The problem is that when I browse, switching from tab to tab to access the tabs, users can access even a few seconds of switching between open tabs or when accessing a tab. I currently have an iPhone 17 Pro. I should mention that the problem occurred with my previous iPhone SE 2020 model. Apple had already diagnosed the phone, but no errors were detected. I received a notification that Firefox wasn't yet fully available for iOS updates, hence the problem. Unless this is a plugin, I'll check the post to see what I have to say so Firefox can run smoothly. Another problem is that when reading information on a website, Firefox is "cut off" and another screen zoom doesn't help, as I still can't see part of the text on the left. The text is simply limited by the border. I'd appreciate your help and feedback. Unfortunately, I cannot attach a screen recording to show what exactly the lag problem is. My e-mail: [edited email from community support forum]