I'm currently using FastStone Resizer to shrink the images (for viewing on tablets, as storage is limited and not expandable). while it is not bad, it is still not as fast as i need it to be - because it only uses a single core (in my overclocked 4.7ghz i5 2500k).
While I have also separately tested LR5.3 (selecting different batches to be processed at the same time, so that i can maximize all 4 cores), it doesn't seem to be significantly faster than the former.
any suggestions on other cutting edge software i could consider?
Thanks in advance for your help !