Cannot browse Amazon without freezing & extreme slowness.

Question

This only happens at Amazon. Once I find an item, scrolling up and down , the page sticks or freezes. The entire computer (any other tab, as well as Tools) froze continuously every time I visited Amazon. The only way to escape this mess was closing w/Task Manager. Online, this is a not a new issue with Amazon. It's not only Firefox, either. Complaints go back two years. Amazon is very willing to help; they have not been able to, so far.
In March, Amazon said it's a cache problem:
1. force reload to ensure that you are looking at a fresh copy of the page, and not the version stored in your cache.
2. clear your cache.
I did the obvious, as suggested.
I then checked many FF troubleshooting suggestions, which I followed. I lowered the memory cache from inside about:config, although in Tools > Options, it was still set at 350MB. - I just lowered that from Tools today. - (Are browser cache and memory cache the same things?) I had blocked all Amazon cookies. I changed browser cache settings - I think Mozilla suggested four places.
Six weeks later, same results. Slow to not moving at all.
Amazon said, "The problem you're encountering on your visits to our website may be related to bookmarks that your browser is generating after using one of our search tools."
"Go to Amazon from our secure site https://"
"Don't use forward and back buttons."
See - they assume I'm searching and going forward and back, which is not really the case. You get seventeen results and go down the page. That's where my issues are. They also assume I'm starting from a logged in position, which is not the case 99% of the time. Don't know if this is important, but it's more accurate.
I have had HTTPS Everywhere installed since last year or earlier. Even logging in at their secure site, once you hit search, the resulting pages begin with HTTP.
One issue was cleared. Something fixed the entire computer freezing issue, so I don't have to close using Task Manager. Scrolling up and down is nearly impossible, still.
FF 37.0.1 installed. To my security addons, I added RAMBack, which hasn't made a difference in relation to this issue. Can I remove it now?
The settings below are all USER SET - the others are at default. Thank you for your help.
browser.cache.check_doc_frequency - 1
" check_disk.capacity = 139264
" disk.smart_size.enabled - False
" disk.smart_size.first_run = False
" disk.smart_size.use_old_max = False
" disk.smart_size_cached_value = 358400
" frequency_experiment - 1
browser.cache.frequency_experiment = 1
browser.cache.memory.enable = True
browser.cache.disk.capacity = 139264
browser.cache.disk.enable = True

Answer 1

Walking Shoe Guy wrote:
TJK - OK - my turn for a DUH question.. What is the Repair Disk? Is that part of the set that came with it?
What you mentioned in your fourth paragraph.
First check the S.M.A.R.T.status on your HD: Applications > Utilities > Disk Utility > in the panel at left, select the first item in the list/your HD mechanism > look atthe bottom of the main window next to S.M.A.R.T. status and see if it says “Verified” or something more ominous like “Failing.”
If S.M.A.R.T.status is "Verified," run Repair Disk: Boot from install disc (insertdisc > restart > immediately hold down c key and keep holding it until you see “Preparing Installation”) > at first screen select the language and click Continue > click on the Utilities Menu in the menu bar > open DiskUtility > select your HD in the panel on the left side > click Repair Disk at bottom of main window. Run this at least twice, and keep running it until it says “appears ok” twice in a row. If that doesn’t happen, you may need a stronger utility such as DiskWarrior or if the directory is damaged beyond repair, you may need to reinstall the OS, or you may have a damaged HD (repair utilities can only repair the directory structure, not the HD itself). When this is finished, quit Disk Utility, quit the installer, and restart. Once booted normally, go to Applications > Utilities > Disk Utility and run Repair Permissions.