How to fix Max-Headroom-style glitches in AVI Render but preview is perfect, 5.1, 5.2? SOLVED!

I checked the forum for others having the same issue for about an hour and found none.

So for some reason, 5.1 and 5.2 want to destroy the render with glitches. It works perfectly in render preview in UE and when I play the animation with the camera cuts view selected. But for the life of me I can’t work out why the render screws up so badly. I notice that when I reduce the quality and the resolution, the glitches aren’t as bad.

5.0 works fine. I create a new level, drop in light sky, fog, cube, CTRL Rig, close the sequencer, open the sequencer, add animation, walk_fwd, click add camera, move it to position, keyframe transform, change the focus, keyframe the focus, build all levels, make it 24 frames, “render this movie to a video, or frame image sequence”, custom frame rate, 24fps 1920*1080, use compression 100. Capture movie.

I verified the game engines, but didn’t do a full uninstall and reinstall. I suppose I could install it on a completely different computer and see if it works there but I need it working on this system.

So I’m thinking of maybe installing maybe 5.7.4 and migrating all my projects from 4.27.2, 5.0.3, 5.1.1 and 5.2.1 all to 5.7.4. But I don’t know how badly they will destroy my projects if they aren’t compatible. What suggestions do you have? Any idea is a good idea since I’m contemplating just using MSI afterburner to record the camera cuts window and then cropping it in Davinci but it won’t be 1080p then. Any ideas are welcome and no idea is stupid since it might have a nugget of genius that leads to a solution.

Thank you in advance. You all rock!

Processor: AMD Ryzen 5 8500G w/ Radeon 740M Graphics - 3.55 GHz
Installed RAM: 96.0 GB (95.2 GB usable)
Storage: 1.86 TB SSD SPCC Solid State Disk, 1.82 TB SSD CT2000P3PSSD8, 466 GB SSD MSI M450 500GB, 3.64 TB HDD ST4000VN008-2DR166
Graphics Card: RTX 4090 (24 GB), AMD Radeon 740M Graphics (410 MB)
Windows 10.

So I solved it. Install 5.7. Make a 5.7 project. Migrate everything to 5.7. Format the hard drive that had 5.1 and 5.2 and smash it with a hammer. Maybe not that extreme but uninstall 5.1 and 5.2. Then 5.1 and 5.2 don’t have the glitch anymore. As for what it was and why? No idea.

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