I have recently installed kde neon on virtual box
gave it 6000 gb ram DDR3 and 3 cores of amd ryzen 5 3600
and on the first time It was working very fast
very snappy,very responsive
apps were opening on a single click and without any delay (the overall performance was fantastic )
but after I restarted the virtual machine
it got slow a lot
it is taking time more than it was taking before to open the apps
and there are delays too
(Note = I have 16 gb ram in total and windows 10 pro installed and only the virtual box app was running)
anybody know what's causing this issue
I loved the performance before and want it again
(INSTALLED THE GUEST ADDITIONALS OF VIRTUAL BOX TOO)

Thanks