I could suggest it may be your video card? Do you have a dedicated accelerated graphics card? If so are you using the latest drivers? Try taking out the video card (or disabling it temporarly) and use the one on the motherboard. If that stops the sha...
Have you sent a query direct to Firefox help? If they don't know about it they can't address the issue. Don't rely on other users to answer your query. You can see by me being the only one to reply that it won't solve your problem. Sad I know but tha...
I have found Firefox has certain quirks also. Not the "shaking issue" you experienced, but is always just slow to load anything, and YouTube videos take forever to start playing compared to browsers such as Chrome or Edge. The only reason I have stuc...
