Right, seems it’s a bit hit and miss. Farting about resizing / cropping photos is very 2005. @ReprobateUK is it worth having a look at what @mikedjames posted up there ^^^?
Going by my experiment the overall file size doesn’t seam to matter it’s more the shape. If I cut the top or bottom off even by a couple off mm it works ok I’m using a iPhone 7 with 14.3
It looks to me like XenForo uses its own proprietary Convert Image plugin, so the way forward will be to create a bug request with the writer of the plugin - if thats the https://xenforo.com/community/resources/convert-image.5609/ plugin I think this is using. Really I think I prefer thesamba.com's phpBB that handles image upload properly, and allows you to find resources you previously uploaded so you dont keep on uploading the same picture. Unfortunately XenForo doesnt work that way " Q: Are attachments reused, meaning if the same attachment is located in several posts does each one use up disk space? A: Each attachment is saved separately, however this is not a problem these days as disk space is so inexpensive. " Shows they miss the point .
A friendly word of advice. Never ever as Barry Haynes to do this. He’s been known to get his forums confused and you wouldn’t wanna see some of those pictures. Poor horses.
I think Mike’s right. clearly the 97x 42 system is conflicting with the N47 plugin. Causing a line 38 paradox error on the return loop backwash code. I think it could be as simple as generating a optimised s9 blink code and forcing the server to re-route via a nexus 4. simples