I have submitted this to the NVDA mailing list and have also sent
similar comments to the Firefox discussion group as well. I'm reposting
this here in case others have had issues with Firefox behaving sluggishly.
Since the release of Firefox 37, I have noticed some issues with
keyboard responsiveness with NVDA and I have filed relevant tickets
regarding these issues. Among them were the following issues:
When typing echo is enabled, some Web sites present more of a delay in
voicing what was typed.
Cursor keys are very slow to respond when playing HTML5 Youtube videos.
On some pages, pressing an arrow key or a quick navigation key works but
sometimes the cursor is returned to the previous position it was in
prior to pressing the key.
I discovered that disabling hardware acceleration seems to have solved
these issues and Firefox seems to be back to normal. I never had to do
this prior to the 37 release. I have mentioned this on one of the
tickets I have filed. Until this issue is resolved, disabling hardware
acceleration may speed up Firefox's performance for those who are
experiencing performance issues. Here is how to do it.
Press alt-T to go into the Tools menu.
Press O to open the options dialog.
Arrow down to the category called "advanced."
Press the tab key to move to the "use hardware acceleration" checkbox
and press the spacebar to uncheck this item.
Press enter to activate the OK button and close the dialog.
I do not know if it is necessary to restart Firefox but doing so
wouldn't hurt.Since the release of Firefox 37, I have noticed some
issues with keyboard responsiveness with NVDA and I have filed relevant
tickets regarding these issues. Among them were the following issues:
When typing echo is enabled, some Web sites present more of a delay in
voicing what was typed.
Cursor keys are very slow to respond when playing HTML5 Youtube videos.
On some pages, pressing an arrow key or a quick navigation key works but
sometimes the cursor is returned to the previous position it was in
prior to pressing the key.
I discovered that disabling hardware acceleration seems to have solved
these issues and Firefox seems to be back to normal. I never had to do
this prior to the 37 release. I have mentioned this on one of the
tickets I have filed. Until this issue is resolved, disabling hardware
acceleration may speed up Firefox's performance for those who are
experiencing performance issues. Here is how to do it.
Press alt-T to go into the Tools menu.
Press O to open the options dialog.
Arrow down to the category called "advanced."
Press the tab key to move to the "use hardware acceleration" checkbox
and press the spacebar to uncheck this item.
Press enter to activate the OK button and close the dialog.
I do not know if it is necessary to restart Firefox but doing so
wouldn't hurt.
--
Feel free to visit my Web site
http://www.davidgoldfield.info
David Goldfield,
Assistive Technology Specialist
