Ok this could be a ver simple and very anoying task to do so read carfully.
1. Start client!
2. Open task manager
3. Go to applications (top tabs)
4. This is where it gets tricky 0.o right click on the client and click go to process
5. Should go to here:
6. Then you are going to look for javaw.exe *32 Looks like this:
7. Right click on that and select set priority and put it to high (warning to not set it to realtime)
8. Then it should speed it up also remember to repeat this process everytime you reload client..