Corel Draw Halt problem

Huy there I am currently using Corel X3 (on Core 2 Duo, 4 Gb RAM)  my mostly work is concerned to line arts and designing and that's why I have installed almost 8000+ fonts for new designs and requirements. I am facing a serious issue about corel draw halt problem mostly while working on corel draw x3 UI mostly whenever I import any file It gets halt and stuck for 5-6 minutes or more which is very problematic not for me but also for anyone.

Please help me in this case and tell me, what should I do?

Should I change my operating system, which one please specify ?

Should I install newer version of corel draw, then which version suits my current need?