Hi Roman, I do expect to do some work on viewport performance improvements once the v4 beta is stabilized and the few remaining missing v3 functions are implemented.
Tried again and got the error. I opened up moi made a sphere went to file/export save to a place the select the 12 (blue selection) and type in 3 over top and nothing happens. I then go and slide the slider over and it all works. I got it to do it three times in a row (closing moi and reopening it) before I typed this.
