We have sub-stepping in our current project and after checking out 4.26, everything breaks and falls apart in ridiculous ways; I’d love to upgrade to 4.26 for the blueprint features, but won’t be able to due to Chaos being default (which has no parity with PhysX). I feel Chaos might be premature to be the default physics engine for production.
Same here; I reported numerous ISM / collision issues for 4.25, which I hoped would be fixed in 4.26, but haven’t received any feedback. Really discouraging to work on a clean example project and writing up a proper reproduction if the report is ignored anyways.