I never have any of these problems. I really think it must be your browser version or some driver or plug in that's not updated, a cache or cookie issue.
Make sure your browser is current and updated. Me, I use Firefox 44.0.2
Clear your browser cache and cookies.
Make sure all your plug ins (java, flash, all that) are current.
If that doesn't fix your problem, send an email to support and tell them about your system, your software, and your specific problem. I think that's a more effective channel than posting here.