Unresponsive Adobe Flash in Firefox (Crashing Plugin)

I am reluctant since I have seen this problem has been posted several times, but unfortunately, the suggested answers have not solved my problem. I am using Mozilla Firefox version 55.0.3 on Windows 10 and have been experiencing problems with viewing animated images and videos. Sometimes, the warning pop-up for the unresponsive Adobe Flash plugin would show. The version of Adobe Flash Player installed is 26.0.0.151, which should be the most updated version. I have tried to follow instructions on disabling hardware acceleration to see if it would work. However, when I right click the image, there is no choice for "Options" or "Settings". I have disabled Protected Mode, but that doesn't have any effect. Could you please help me fix this problem?

As mentioned, I have already looked on several forums in attempt to solve these issues, yet could not find an appropriate solution. To be honest, this issue has persisted for about 2 years, and I had waited to see if the new Adobe Flash update would fix the issue. However, the problem is still recurring. I have also followed the instructions from this link, but these did not solve the problem. I've included screenshots and recent report ID links for your reference. Any help is much appreciated.

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68b3bc53-f6f8-456d-a5be-fd3188fd6716    2017-08-30    5:08 PM