Hallo everybody!

Zoom with mousewheel is very slow in draftsight even with simple drawings (2D housefloor plan, less than 1MB) .

It is taking all the capacity of 8gb memory RAM. I tried ZOOMFACTOR 100, it helps littlebit, zooming is faster but still little bit jerky.

Is here any way to fix it?

I found here several answers which recomend new and better graphic card with new drivers or faster computer but I don't think, that is the solution of this problem.

I am working on macbook pro, with all drivers original and actualized.

2,26 GHz Intel Core 2 Duo, 

8 GB 1067 MHz DDR3

NVIDIA GeForce 9400M 256 MB

OS X 10.8.5 

Thank you very much.