On a different engine (XRay) I used for one of my old projects people were reporting this as a glitch with DX / tesselation. However, those stretch lines were glitching all over the place in rapid motion and followed the characters their absolute position.
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Are the stretch lines pointing towards a specific location? Is the endpoint of the stretch visible and does that endpoint stay at the same absolute position?
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It’s also interesting that the trees are doing the same since they are less complex than the decapitated zombies you also notice this on. Do the trees use bones for animation? Or are these the static meshes?
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Just to be sure, are there any errors or warnings in the log that could be relevant?
*Edit I’ll be back later today to reply. Some things you can also try are:
- Updating the GPU drivers
- Checking if the problem exists in UE4, since people report a lot of trouble on UE5.
- Testing if the problems exist on a different PC (different GPU), as this can be a soft/hardware related GPU rendering problem.