Thinkpad scrolling freezes then resumes
This happens on all of my Thinkpads, W510, W520 and T540p. The Thinkpad integrated "mouse" has both a touchpad and stick. I use the stick and the mouse buttons (left, center(scroll), right instead of the touch pad most of the time. So the right and left buttons perform as a normal three button mouse, but the center (scroll) button instead of being like a mouse wheel that jumps is essentially "infinitiely variable" so that holding the center button and moving the stick will scroll up and down.
What happens (and has been happening for a very long time) is that the scroll will "freeze". In many cases I've already loaded the page and am scrolling up or down within a region that is already loaded. The scrolling then freezes. No spinning wait indicator, just a hard lock up. After sometimes as long as 3-5 seconds (sometimes less) the page will then move again.
I have "Use autoscrolling" and "Use smooth scrolling" enabled and "Use hardware acceleration when available" disabled, but none of these seem to matter.
Suggestions welcome.
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This could a delay caused by the rendering of media on the page. Have you checked your power settings make sure you are not in power saver. If you have a power setting for graphics that could help if you set it to maximum performance. I've seen this before in my own personal experience. You can open the inspector in the browser and view network and performance to help verify.