Machine Slow on Curves

[swisscheese]

G21 G90 G40
G0 Z5.0
( T0 : 6.2 )
T0 M6
( 3DSurface1 )
G17
M3 S1000
G0 X-68.3899 Y-1.24
G1 F2400.0 Z-33.0241
G1 F3500.0 X-66.7887 Z-28.8931
G1 X-65.5487 Z-26.3339
G1 X-64.3087 Z-23.7747
G1 X-63.0687 Z-21.4983
G1 X-60.5887 Z-18.0194
G1 X-59.3487 Z-16.28
G1 X-58.1087 Z-14.8685
G1 X-54.3887 Z-10.9792
G1 X-53.1487 Z-9.9919
G1 X-49.4287 Z-7.0334
G1 X-48.1887 Z-6.261
G1 X-44.4687 Z-4.119
G1 X-43.2287 Z-3.4521
G1 X-38.2687 Z-1.6107
G1 X-37.0287 Z-1.1957
G1 X-30.8287 Z-0.0754
G1 X-29.5887 Z-0.0412
G1 X-24.6287 Z-0.0064
G1 X-23.3887 Z0.0
G1 X2.8412
G1 F2400.0 X3.1 Y1.24
G1 F3500.0 X-23.3887
G1 X-24.6287 Z-0.0064
G1 X-29.5887 Z-0.0412
G1 X-30.8287 Z-0.0754
G1 X-37.0287 Z-1.1957
G1 X-38.2687 Z-1.6107
G1 X-43.2287 Z-3.4521
G1 X-44.4687 Z-4.119
G1 X-48.1887 Z-6.261
G1 X-49.4287 Z-7.0334
G1 X-53.1487 Z-9.9919
G1 X-54.3887 Z-10.9792
G1 X-58.1087 Z-14.8685
G1 X-59.3487 Z-16.28
G1 X-60.5887 Z-18.0194
G1 X-63.0687 Z-21.4983
G1 X-64.3087 Z-23.7747
G1 X-65.5487 Z-26.3339
G1 X-66.7887 Z-28.8931
G1 X-68.6487 Z-33.0241
G1 F2400.0 Y3.72
G1 F3500.0 X-66.7887 Z-28.8931
G1 X-65.5487 Z-26.3339
G1 X-64.3087 Z-23.7747
G1 X-63.0687 Z-21.4983
G1 X-60.5887 Z-18.0194
G1 X-59.3487 Z-16.28
G1 X-58.1087 Z-14.8685
G1 X-54.3887 Z-10.9792
G1 X-53.1487 Z-9.9919
G1 X-49.4287 Z-7.0334
G1 X-48.1887 Z-6.261
G1 X-44.4687 Z-4.119
G1 X-43.2287 Z-3.4521
G1 X-38.2687 Z-1.6107
G1 X-37.0287 Z-1.1957
G1 X-30.8287 Z-0.0754
G1 X-29.5887 Z-0.0412
G1 X-24.6287 Z-0.0064
G1 X-23.3887 Z0.0

Thats only a small section. I had already removed G64 when i copied it.

i put into mdi what you said and still no luck. For what it is worth the machine runs smooth and fast when i run an example provided which is a spiral. the spiral's code is lots of radius's not lots of small lines like the above