4.11 lost frame rate

[sagittario]

Sorry I try to express myself more clearly.

The benchmark was run with the track 'the black death'.

This is benchmark result with 4.10.1m

Frames, Time (ms), Min, Max, Avg
6461, 144909, 11, 88, 44.587


This is benchmark result with 4.11

Frames, Time (ms), Min, Max, Avg
5721, 144521, 0, 86, 39.586


During the execution of the track I noticed that happened the freezing of the image (movie blocked for fraction of a second) that did not happen with the previous version.
These freezes have caused a minimum frame rate equal to zero.

The freezing of the image is always between a scene and the next or in other words between a view and the subsequent.

This new update may have uploaded more work the CPU?
I have an old pc but supported well the previous version, the features are:

P4-2.8 GHz, 1.7 GB ram, ATI radeon 9600X pro 256Mb.

Thank's