Allocate more RAM to Old School

1

Open Control Panel

Start > search 'Control Panel'

2

Click on the Java icon

3

Select the 'Java' tab on the window that appears.

4

Select the 'View' button in this Java tab

5

You will now see your installed Java versions.

In the fourth column 'Java Runtime Parameters' double click

6

Type '-Xmx256m' into the entry box.

The 256 part tells Java to use up to 256mb of RAM instead of the default, which is much lower. To allocate more or less, just change the number. 

7

Click Apply and OK, then close reopen your browser