hello Garth...........

follow the steps:

• STEP 1: Opening the Config in Your Browser. Type “about:config” into the location bar and hit Enter.
• STEP 2: Adjust the Pipelining Settings. ...
• STEP 3: Adjust the Delay Option. ...
• General methods to make Mozilla Firefox faster.

Clear all cookies, site data and cache

• Click the ≡ menu button. and select Options.
• Select the Privacy & Security panel and go to the Cookies and Site Data section.
• Click the Clear Data… button. The Clear Data dialog will appear. ...
• Click Clear.

Delete unwanted files on firefox

• Click on the Firefox button.
• Click on Options.
• Click on the Advanced section.
• In the advanced tab, go to the Network tab.
• Click the Clear Now button next to the sentence that shows how much hard disk space your cache takes up.

NOTE: Restart firefox and computer both.

tell me its help then mark solution.

thank you!

Greeting From

Arman

Hi Arman,

Here's what I did:

STEP 1: Opening the Config in Your Browser. Type “about:config” into the location bar and hit Enter. (Done)

   STEP 2: Adjust the Pipelining Settings. ... (set to “true”)
   STEP 3: Adjust the Delay Option. ...

(print.printer_Canon_MF210_Series.print_page_delay set to “10” from "50")

   General methods to make Mozilla Firefox faster. 

(I could not find any way to do this)

Clear all cookies, site data and cache (Done)

   Click the ≡ menu button. and select Options. 

("Preferences" from Firefox menu on my browser)

   Select the Privacy & Security panel 

and go to the Cookies and Site Data section. (Done)

   Click the Clear Data… button. The Clear Data dialog will appear. ...(Done)
   Click Clear. (Done).

Delete unwanted files on firefox

   Click on the Firefox button.
   Click on Options (Doesn't exist).
   Click on the Advanced section. (Could not find)
   In the advanced tab, go to the Network tab.
   Click the Clear Now button next to the sentence 

that shows how much hard disk space your cache takes up.

NOTE: Restart firefox and computer both. (Done)

(Printing from an email was much worse. My OS is MacOS Sierrra 10.12.6. Firefox version: 78.0.2 (64-bit)) Please let me know if you can think of how to improve upon this. Thanks for trying. Cheers, Garth

Hello again garth,

I think this is a printer issue not a browser.

Thank you,

Arman

Hi Arman,

It works fine in Safari Version 12.1.2 (12607.3.10). What I'm attempting to do is convert an email message from a web-based email account into a pdf file that I save to my computer. In order to do that I have to use the print function in the web-based email account. In Firefox 78.0.2 (64-bit) it's taking much longer to do than it used to and much longer than Safari. I deleted Firefox from my computer and reinstalled it. Same thing. Thanks for your attempt to help. Cheers, Garth

Hi Garth, is the problem on a popular site that forum volunteers could test (like Gmail, Yahoo, Outlook, etc.)?

I think Firefox won't print if any part of the page is still loading. Could you check the toolbar and see whether the Stop-Reload button still shows Stop (the X icon)?

Another user reported problems with slow printing -- or a long delay before getting a error message when trying to print -- recently, but I don't know if it's related, but it's also on a Mac: https://support.mozilla.org/questions/1294744

Hi jscher2000,

It's been happening for me on Telus webmail, Tutanota email, Protonmail and my Credit Union website.

Thanks for the link to question 1294744. It seems to be similar. I too have experienced this problem only since the last Firefox update.

Cheers, Garth

Hi jscher2000,

It also happens for me at mailfence.com.