Reader scrolling is laggy and choppy

Reader scrolling is laggy and choppy in Mac (OS 10.7.5) to the point it is so slow and unpleasant that I avoid it at all costs. How can I fix this?
Preview refuses to search many pdfs; so I keep both apps open -- Preview to read, Adobe to search. It's very slow and unproductive.
I see an earlier post (2011) that mentions a possible contlict with an app called RightZoom, which I don't have; nor do I understand the solution posted for people without RightZoom (how do I log into a program I haven't installed?).
I'm not a techinical person, so need a clearly explained solution, if there is one. Thank you.

Odd. I know for a fact that RightZoom will have no effect on this, since it is only a UI mod for maximizing windows with the green button. Besides, you don't have it installed.
There's an app called "AppZapper". It completely removes an app and all associated files (preferences, plugins and .plist files)
Download it, Install it, and open it.
Drag the Reader app to the window and "Zap it".
Empty your trash and then download and reinstall the offline installer.
Then open a PDF the was lagging. Let me know if it persists.

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I own a barrely 1 year old Macbook Pro and I´m starting to notice some lagging on it.
First I noticed Safari crashing every now and then when i open a new tab, then Safari started getting slow and using a lot of memory.
What I just recently noticed was when I do the "three finger swipe" to see all my widows - it´s not "zooming out" very smooth, instead it is laggy and choppy!!
Must say it´s very annoying and it might seem as it is a minor issue, but my Pro is not even a year old and it shouldn´t be doing that in the first place.
But also, I see it as there must be a bigger underlaying issue???
So, I decided to do a recovery and re-install Lion, took a few hours and it didn´t change anything. At least not the lagging when swiping three fingers, Safari hasn´t crashed yet, but it´s only been an hour since I recovered tho.
What could be the problem?!

Many have suggested that some choppy playback issues (for in-browser playback) are related to the Adobe Flash plugin.
Adobe has released a new version of the Flash plugin this week, which may perform better (although I can't confirm that the problem has gone away completely).
Here are some steps to follow to cleanly update your Flash:
1) Download the Flash plugin un-installer from Abobe, available at: http://kb2.adobe.com/cps/141/tn_14157.html
2) Close all browsers on your machine and run the Abobe Flash plugin un-installer you downloaded for your platform.
3) Open your browser and reinstall the Adobe Flash plugin (v.10.0.42.34 or greater), available from Adobe at: http://get.adobe.com/flashplayer/
4) After the installation, close and re-open your browser, then try playing back some Flash video at YouTube or wherever...
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It this somewhat low powered laptop destined not to play videos, or can it be altered to get smooth streaming capabilities?

Many have suggested that some choppy playback issues (for in-browser playback) are related to the Adobe Flash plugin.
Adobe has released a new version of the Flash plugin this week, which may perform better (although I can't confirm that the problem has gone away completely).
Here are some steps to follow to cleanly update your Flash:
1) Download the Flash plugin un-installer from Abobe, available at: http://kb2.adobe.com/cps/141/tn_14157.html
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3) Open your browser and reinstall the Adobe Flash plugin (v.10.0.42.34 or greater), available from Adobe at: http://get.adobe.com/flashplayer/
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Why do I have slow and choppy scrolling?

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I have the same problem, it's not occurring all the time, but very often. Slow response in scrolling websites, switching between tabs and very laggy when scrolling pdf documents, comparing to chrome. There's a feeling like firefox just hangs up. Can't be the computers fault, because other software works with no problems while firefox isn’t responding.
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I posted this elsewhere, but it might help you:
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I too had the Magic Mouse quit working properly. The clicks and scroll would function, but the pointer barely moved. This followed a period of pleasure in perfect performance. If the mouse was brought close to the top or back of the tower, the pointer worked. Move it a foot in front, and the pointer quit or went very sluggish.
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Reader scrolling is laggy and choppy

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