Blinking cursors cause unnecessary bandwidth use because every blink requires data packets to be transmitted. Applications that do not use a blinking cursor or that allow the blinking cursor to be disabled are preferred.
A blinking cursor on the remote client session will cause continuous client/server traffic. This may not be a problem in many environments, but if connections are made over, for instance, a dial-on-demand router, excessive line charges can be incurred.
If this does not apply to your environment, then can you not speed up the blinking cursor through Control Panel - Keyboard - Cursor Blinking Rate? or is there a policy in place that prevents this?
Good Luck