Copy + Paste taking a long time

I’ve seen some older threads regarding this issue but none that are recent, when I copy and paste in Rhino6 it takes quite a while even with very basic geometry. I have launched Rhino in safe mode, and it is completely fine and speedy, I have also tried disabling extra plugins and it seems to help but only very slightly. Any advice would be greatly appreciated.

Hello - this is currently slated to be fixed in V7 -
RH-60569 Paste lags

-Pascal