I am downloading Bitcoin core0.14.2 on desktop: quadcore, 30Mb/s Broadband but find it slow and getting slower. It has been running ~24 hours. 1st thing this am was quoting ~3 days to complete, now wants 7 days+.

I am running my laptop through same router-would this have an effect?

Also can I close the Bitcoin Core program and start again later where it left off or would it need to start again from Block0 ?

Any advice gratefully received.