One option is to make another account on at least one other kbin or lemmy instance. You can at least browse with that when the instance that has your main account is sluggish or otherwise having problems. Not to mention that it will take some load off that main instance, help other users on that instance.
Even if you don't want to make an account, you can at least browse without being signed in using another instance. Can't customize the settings, but that may not be a huge issue for you. I've popped over to fediverse.boo, another kbin instance, to anonymously browse when kbin.social, where my account is, has issues.
It's a neat perk of the Fediverse that that is an option. On early Reddit, when the site went down -- and it did that a lot back when -- it was down.