WickedInsignia

This seems to have worked! Incremental render does indeed seem to have been the problem. On your 4.9 API comment: I have tried that and that also fixed the issue, but felt like an inferior API to the newest one so I was keen to get this one working. Now that we've narrowed it down, would it be worth letting Andrew know? Since Incremental Render is a default setting I assume this is still a bug nonetheless.

I had vertical sync on, which would explain the frame-rate shown in that video. I tried turning VSync off, as well as rebuilding the 3DCOAT directory as suggested here and neither resolved the issue. I have uninstalled/reinstalled 3DCoat 2021/2022 a few times on this PC across the last year or two, wiping all traces of 3DC including the 3DCOAT folder in Documents. At no point did this resolve the issue for me. Peculiarly, this issue does not occur in the Retopo, UV or Paint rooms. The 3DMouse movement is perfectly smooth in those rooms, the issue shown in the video only occurs in the Sculpting room.

BUMP. This is still present in 2022.37

I have noticed a viewport stuttering issue when using 3D Coat 2022.16 with a 3DConnexion Space Mouse Wireless. When orbiting slowly, there seems to be a consistent stutter that increases in severity as you get further away from origin. I've uploaded a screen recording HERE to show the issue in action. This was recorded in version 2021.39 but the issue still persists exactly as shown today. You'll notice it becomes worse once I move far away from the object, and becomes less noticeable up close. Although it looks like an artifact of the recording, the long stutter and grid "flashing" is very much visible in use and not a result of the video. This effect is very noticeable at slow orbit speeds and is quite distracting. I did a little troubleshooting to ensure it wasn't my system. The issue persists when: The Spacemouse is plugged-in and not using wireless After a restart and a reinstall of 3D Coat With up-to-date GPU drivers, 3D Connexion drivers and Windows 10 version With V-Sync on and off I noticed that the problem was not present when using the 3D Coat 4.0 3D Connexion API via the preferences. This seems to be unique to the new API. For reference, my specs are as follows: Intel i7 6700 Nvidia GTX 1080 16GB RAM Windows 10 Home version 21H2 1440p Dell UP2516D monitor Hopefully that's enough info to help narrow down the problem.