I've been using autocad for years. but even if I set the variable viewris to 1000 every time I zoom and work on arches circles I always have to do by hand regen because it is imprecise to do intersection operations as I can remedy this?
the variable viewris reaches up to 20000. Why do you keep it at 1000?
It was worth it on old pcs.
In all cases this problem is evident when you work with first very wide zooms, then very tight.
If you do a regen for example half the zoom range you need to work, it almost disappears.