Is a new PC needed?

[Pilsbury]

I remember you saying Dean. What I meant by machine is set at 3000mm/min is what I’ve set the feed rate for this particular cut. Lord knows why, just seemed a good number

[JAZZCNC]

I remember you saying Dean. What I meant by machine is set at 3000mm/min is what I’ve set the feed rate for this particular cut. Lord knows why, just seemed a good number

Ah, we are talking apples and pears then.!

To be honest with 3D work if you set a high feed rate you will rarely achieve that feed rate, esp in the Z-axis, because the moves are so short so it doesn't have time to accelerate to the set feed rate before the next move comes along. If you watch the Actual feed DRO and you'll see how high it gets compared to the commanded feed rate.

So in actual fact, if doing mostly 3D work then you would tune the motors differently so they are biased to have a higher acceleration with a lower velocity, this way the machine accelerates faster between moves, and a higher feed rate is reached before the next move comes along. The best way to do this is to have a separate profile set up with the motors tuned for higher acceleration and call it 3D work.
The time saving can be quite dramatic because if you are shaving off just fractions of a second per move then multiply this by millions of moves and you can easily turn this into hours in saved time. The only downside to setting a high acceleration is that if go too high the machine can become very jerky or if overdone even cause missed steps (but in your case because you have closed-loop motors this won't happen, well it could but would cause an error so won't get very far.!) . . . Like everything there is a limit or price to pay.!