Collective order processing too slow

Dear Experts

I have the following situation and appreciate a lot your advice.

We use collective orders with SYBASE database, the fact is that all the processing in the shop floor, including order creation, activities confirmation, etc is deadly slow.

Even for opening a single production order the system takes a very long time to show information.

Does anybody have faced a similar situation?, is it normal with collective orders that long processing time?, could it be the combination of collective orders and sybase?

Thanks in advance for your support

Regards

Valentin PA