I'm using DeoVR App on intel Core i7 9th Gen, RTX2070, Win10, Oculus Rift S.
you mentioned logs from the device, for which device? oculus rift s? What kind of logs? where can I get these logs? As for video examples, any video on SLR after 2 minutes of playback has the mentioned issue. I use default streaming resolution (4K or 5K), I don't change them, with h265 codec. I switched to h264 codec, It's even worse.
ThorofAsgard said it well: "When i move my head around the whole image window tries to follow and its jittery as hell". and there are a lot decoding artifacts like square blocks and pixels.