Thinking of planning a daytrip to Ipoh one of the coming weekends. To all the regulars who travel there from KL using the PLUS highway, I have a couple of questions:

1. Saturday vs Sunday - Which day typically sees lesser traffic, assuming it is a normal weekend (i.e. no festivities, school holidays, long weekend etc)
2. What's the best timing to leave Ipoh to avoid traffic entering KL - 1pm? 3pm? 5pm?

Thanks!