No, still no joy despite submitting an error report. This is pathetic considering all the money spent on Instagram. I also can't post a wide format e.g. a panorama and aspect ratios in a vertical format are severely limited.
I turn off hibernation and fast start up on all PCs. Standard start up up is fast enough if you have a SSD. I always power off the PC is not used for a while or sleep for a short break.