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I am finding the application so slow it is unusable since the Windows 10 Fall Update was applied. I searched the internet and found a couple of hits on other forums where users are complaining of the same issue. It is taking 30-60 seconds to open. The version is 11.0.3.134. Once the application is open clicking the tabs is also very slow. The PC utilisation is very low so it isn't a PC performance issue.

Thanks Steven, but this makes no difference. I have concluded that the software is not compatible and Nitro are just not at all bothered that I have spent good money on something that no longer works. John

I can confirm this problem, even on a decent Workstation (AMD Ryzen 1800X, Samsung SSD, etc.) Nitro takes 30 - 40 seconds to load and switching tabs is extremely slow so it is not usable. No other application on my machine shows this behaviour.

Jürgen, do you have any problems when printing? When I try to print, the print dialog box appears in pieces over about a 10 second time frame. And should we really have to use a 'trick' for software that costs over $100?

It's well known that this does not help, and that the same problem affects the latest versions of both V10 and V11 of the software. It's also likely a Microsoft problem with MFC apps using high-res ribbons since the last Windows update, but that shouldn't stop Nitro support looking for a workaround

I have been working with Nitro. I have performed a fresh installation with and without "Bitdefender" enabled. The result is the same. I am finding it doesn't even work for a day or two anymore, it is slow out of the box. Opening a PDF takes a long time and if I click the print icon I can go and make a cup of coffee (exaggeration). In my opinion, this is related to the Fall Update.

No need to deactivate, but if you clear out all the Nitro support files to perform a totally clean install then you will need add your license again to activate the new installation, so make sure you have it to hand. Reinstalling (4 times now) hasn't helped me me (or others) - it works for a day or two then slows down again.

I can also add that just going from one menu to another (for example from Home to Edit) takes about 5 seconds (on a win 10 desktop, 64bit). Very odd indeed.

Just want to add that I have the same problem in Nitro Pro 10.5.8.44. It's soo slow that the program can hardly be used anymore. Pls fix asap. Thanks.

I have the same problem, also since the latest Windows 10 update. I've had to re-install Nitro twice now. It works fine for a few days, then gets slower and slower starting until it becomes unusable. Using the clean-up tool and re-installing brings it back, but not for long. Even then, right after installing, copying text to the paste buffer can take up to 10 seconds and preparing a document to print takes 5-10 seconds (the time between pressing the "print" button and seeing the print dialog to prepare the print-out). I'm using Version 11.0.6.326