One of the major issues of the sample right now appears to be some heavy prediction issues when sliding across walls (especially while jumping). It becomes very jerky, and I'm sure I'm not the first one who has noticed this. The issue does not happen in preview mode. I saw some code for prediction verification, but I am not sure yet if it doesn't catch this issue or I don't understand how to properly check for those errors. At first I thought I might have broken something during my experiments, but I reverted to the original state and the same issue still exists. Anyway, I'm looking into this now and trying to understand the relevant parts of code, but I figured I better ask here in case somebody already knows something about it or has looked into it. I'll make sure to share anything I find. One thing I noticed is that while walking on the ground, it only happens when the angle towards the wall is very shallow (< 45 degrees). Strangely this is not the case during air movement. Also, is there a way to simulate lag without external tools, similar to "net pktlag=xxx" in Unreal?