I have had problems with Ebay freezing up on Firefox and Palemoon. There is some part of a script on their own domains (rather than being one of the third party ones) that will freeze and make the browser go "not responding" but eventually it will time out and you can use the site. It happens most on item pages and has been happening for over a year. It also sometimes happens on Chrome. This is what my findings are in relation to the Ebay problem.
- It freezes on my home computer. Windows 7 x86 with Firefox and Palemoon, but not with Chrome.
- It freezes on my work computer, Windows 7 x86 with Chrome and Firefox.
I will note that the freeze with Chrome on my work computer is very short, perhaps 1-2 seconds. I only notice it because I have all theme stuff in Windows disabled, so I can see the title bar change every time I click on an item page. When Chrome is skinned, you do not see this happen.
And I agree, I can't find any reason for it in particular. Graphic settings all on or all off. I can see the issue in the inspector, but it comes from Ebay.com itself, some script that is obfusicated that I can't tell what it is trying to do. I think they just have some optimization issues on their end. And since they had redesigned their cart/payment portal to be for mobile browsers, we can imagine that the desktop experience is not high on their list of priorities.