size matters

I processed some scenics that are scans from slides, full frame, in topaz AI software.  Though the tiffs were originally saved compressed as LZW, they come out much larger, without the compression.  My website accepts up to 64M, and many are over 100M, eg example 143M.  I had a compress action but when it goes to save it says it will be larger with lavers.  I look and there is only 1 layer, that says layer 1.  I flatten anyway and it becomes background and saved, it becomes ~ 100M.  So then I go back to compress using LWZ and it is back to 143M.  I posted a similar thread about trying to reduce the size in 'image size' and also had images coming out larger instead of smaller when reduced there. What is going on? I din't want to have to go over every image and reduce each's measurements. When there were only a few I would do so and save with a minus (-) put after the name, but this is a lot of trouble when so many are coming out gigantic.