Hi Shasaar,
I think, it's not the right approach, modifying the original image file size after the upload (unless desired by the client). For me there is absolutely no point in resizing the image if the original file is already on the server. The image should be resized before upload (in the Browser) https://gist.github.com/dcollien/312bce1270a5f511bf4a, or just after the upload during/before the output on the website. But that is just a personal opinion.
Besides, the plugin works very well for me, also with all those plugins (except "Search") you have mentioned, so the issue is somewhere else.
I think, it's not the right approach, modifying the original image file size after the upload (unless desired by the client). For me there is absolutely no point in resizing the image if the original file is already on the server. The image should be resized before upload (in the Browser) https://gist.github.com/dcollien/312bce1270a5f511bf4a, or just after the upload during/before the output on the website. But that is just a personal opinion.
Besides, the plugin works very well for me, also with all those plugins (except "Search") you have mentioned, so the issue is somewhere else.